added default snippets directory for FreeBSD platform

Updated for Suse 15.0

Fix multiple values for the same key (include/listen) in server config file

With this one can now also write

 - include:
   - file1
   - file2

Rather than only

 - include: file1
 - include: file2

Fully document #193 stream module

Document pid_file pillar for nginx state (#96)

Fix sites-available bug in formula logic

Document issue 93 in pillar.example

Fix build deps for NGINX NG build from source

makedirs needed for 'available_dir' pillar

Fix #182 bug

Enforce PPA's on Ubuntu(s) only; not Debian

Document #122 solution in pillar.example

Disabled automatic sorting of mapping keys in jinja templating

Servers config should require available/enabled dirs

Add SUSE support and 2 small fixes

implement test harness

on openSUSE Leap 15.0, the string was systemd.cpython-36

like openSUSE and SLES

to reduce duplication of constants

deploy certificates directly from pillar

Snippets

Allow installation of multiple packages

... by providing a pillar string. I developed this for use in
combination with ext_pillar and file_tree to deploy letsencrypt
certificates.

Replace tabs in pillar.example with spaces.

tabs cause salt to trigger a render error because tabs are 'illegal':
```
yaml.scanner.ScannerError: while scanning for the next token
found character '\t' that cannot start any token
  in "<unicode string>", line 33, column 32:
            pid: /var/run/nginx.pid\t\t### Directory location must exist
                                   ^
```

Allow to use load_module directly

[nginx/users] convert file.present into file.managed with no content