adhere to the FreeBSD defaults

* fix(redhat): use correct dirs for redhat family

Red hat family distributions do not implement sites-enabled nor vhosts.d
directories and all virtual hosts are under /etc/httpd/conf.d

Redhat based distros don't have /etc/init.d/httpd to rotate logs.
Default for them uses systemctl reload to rotate logs

The Suse family of distributions does not implement the sites-available/sites-enabled
distinction and puts all vhosts into /etc/apache2/vhosts.d.

Sources:
- https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-apache2.html#sec-apache2-configuration-manually
- https://build.opensuse.org/package/view_file/openSUSE:Factory/apache2/apache2-httpd.conf?expand=1

FEATURE: Archlinux support
FEATURE: Windows support
FEATURE: Enhanced CI/CD
FEATURE: modular states

BREAKING CHANGE: 'apache.sls' converted to new style 'init.ssl'
BREAKING CHANGE: "logrotate.sls" became "config/logrotate.sls"
BREAKING CHANGE: "debian_full.sls" became "config/debian_full.sls"
BREAKING CHANGE: "flags.sls" became "config/flags.sls"
BREAKING CHANGE: "manage_security" became "config/manage_security.sls"
BREAKING CHANGE: "mod_*.sls" became "config/mod_*.sls"
BREAKING CHANGE: "no_default_host.sls" became "config/no_default_host.sls"
BREAKING CHANGE: "own_default_host.sls" became "config/own_default_host.sls"
BREAKING CHANGE: "register_site.sls" became "config/register_site.sls"
BREAKING CHANGE: "server_status.sls" became "config/server_status.sls"
BREAKING CHANGE: "vhosts/" became "config/vhosts/"
BREAKING CHANGE: "mod_security/" became "config/mod_security/"

NOT-BREAKING CHANGE: 'config.sls' became 'config/init.sls'
NOT-BREAKING CHANGE: 'uninstall.sls' symlinked to 'clean.sls'

The mod_ssl package name could be overridden in apache:lookup:mod_ssl.
Due to the way lookup keys are merged into the main apache dictionary,
the package name clashed with the mod_ssl configuration defined under
apache:mod_ssl.

Fix that by renaming the mod_ssl package variable to mod_ssl_pkg.

Drive-By: Add mod_ssl_pkg to the pillar.example file.

```bash
apache-formula$ yamllint -s .
./pillar.example
  2:1       warning  missing document start "---"  (document-start)
  5:26      warning  truthy value should be one of [false, true]  (truthy)
  50:18     warning  too few spaces before comment  (comments)
  51:16     warning  truthy value should be one of [false, true]  (truthy)
  52:57     warning  too few spaces before comment  (comments)
  52:89     error    line too long (104 > 88 characters)  (line-length)
  67:33     warning  truthy value should be one of [false, true]  (truthy)
  67:38     warning  too few spaces before comment  (comments)
  69:31     warning  too few spaces before comment  (comments)
  70:8      warning  missing starting space in comment  (comments)
  75:53     warning  too few spaces before comment  (comments)
  75:89     error    line too long (98 > 88 characters)  (line-length)
  76:55     warning  too few spaces before comment  (comments)
  76:89     error    line too long (101 > 88 characters)  (line-length)
  78:50     warning  too few spaces before comment  (comments)
  79:89     error    line too long (95 > 88 characters)  (line-length)
  82:47     warning  too few spaces before comment  (comments)
  83:54     warning  too few spaces before comment  (comments)
  83:89     error    line too long (100 > 88 characters)  (line-length)
  84:58     warning  too few spaces before comment  (comments)
  84:89     error    line too long (109 > 88 characters)  (line-length)
  93:32     warning  too few spaces before comment  (comments)
  100:89    error    line too long (105 > 88 characters)  (line-length)
  101:33    error    trailing spaces  (trailing-spaces)
  102:16    warning  truthy value should be one of [false, true]  (truthy)
  231:20    warning  truthy value should be one of [false, true]  (truthy)
  242:32    warning  too few spaces before comment  (comments)
  249:20    warning  truthy value should be one of [false, true]  (truthy)
  254:20    warning  truthy value should be one of [false, true]  (truthy)
  260:21    warning  truthy value should be one of [false, true]  (truthy)
  283:8     warning  missing starting space in comment  (comments)
  284:8     warning  missing starting space in comment  (comments)
  297:15    warning  too few spaces before comment  (comments)
  328:18    warning  truthy value should be one of [false, true]  (truthy)
  330:20    warning  truthy value should be one of [false, true]  (truthy)
  342:15    error    empty value in block mapping  (empty-values)
  345:18    warning  truthy value should be one of [false, true]  (truthy)
  348:18    warning  truthy value should be one of [false, true]  (truthy)
  355:18    warning  truthy value should be one of [false, true]  (truthy)
  358:89    error    line too long (91 > 88 characters)  (line-length)
  359:26    warning  truthy value should be one of [false, true]  (truthy)
  362:89    error    line too long (99 > 88 characters)  (line-length)
  365:89    error    line too long (267 > 88 characters)  (line-length)
  367:21    warning  truthy value should be one of [false, true]  (truthy)
  369:26    warning  truthy value should be one of [false, true]  (truthy)
  371:1     error    too many blank lines (1 > 0)  (empty-lines)

./apache/osfingermap.yaml
  3:1       warning  missing document start "---"  (document-start)

./apache/modsecurity.yaml
  4:1       warning  missing document start "---"  (document-start)
  6:18      warning  truthy value should be one of [false, true]  (truthy)
  7:20      warning  truthy value should be one of [false, true]  (truthy)
  14:18     warning  truthy value should be one of [false, true]  (truthy)
  15:20     warning  truthy value should be one of [false, true]  (truthy)
  22:18     warning  truthy value should be one of [false, true]  (truthy)
  23:20     warning  truthy value should be one of [false, true]  (truthy)

./apache/defaults.yaml
  4:1       warning  missing document start "---"  (document-start)
  5:26      warning  truthy value should be one of [false, true]  (truthy)
  7:19      warning  truthy value should be one of [false, true]  (truthy)
  10:18     warning  truthy value should be one of [false, true]  (truthy)
  11:20     warning  truthy value should be one of [false, true]  (truthy)

./apache/oscodenamemap.yaml
  4:1       warning  missing document start "---"  (document-start)
  4:8       error    trailing spaces  (trailing-spaces)
  9:8       error    trailing spaces  (trailing-spaces)
  14:7      error    trailing spaces  (trailing-spaces)
  19:6      error    trailing spaces  (trailing-spaces)
  24:8      error    trailing spaces  (trailing-spaces)
  29:9      error    trailing spaces  (trailing-spaces)
  34:7      error    trailing spaces  (trailing-spaces)
  39:8      error    trailing spaces  (trailing-spaces)
  44:8      error    trailing spaces  (trailing-spaces)
  50:9      error    trailing spaces  (trailing-spaces)
  61:1      error    too many blank lines (1 > 0)  (empty-lines)

./apache/osfamilymap.yaml
  4:1       warning  missing document start "---"  (document-start)
  16:89     error    line too long (104 > 88 characters)  (line-length)
  43:89     error    line too long (105 > 88 characters)  (line-length)
  56:16     warning  truthy value should be one of [false, true]  (truthy)
  114:11    error    empty value in block mapping  (empty-values)
  114:11    error    trailing spaces  (trailing-spaces)

./test/salt/pillar/default.sls
  5:26      warning  truthy value should be one of [false, true]  (truthy)
  7:18      warning  truthy value should be one of [false, true]  (truthy)
  8:20      warning  truthy value should be one of [false, true]  (truthy)
```