feat(servers_config): add require statement to manage dependencies

Also, check config before applying

* Automated using https://github.com/myii/ssf-formula/pull/318

* Automated using https://github.com/myii/ssf-formula/pull/316

* Automated using https://github.com/myii/ssf-formula/pull/311

* Automated using https://github.com/myii/ssf-formula/pull/310

## [2.6.3](https://github.com/saltstack-formulas/nginx-formula/compare/v2.6.2...v2.6.3) (2021-04-03)

### Bug Fixes

* **freebsd:** add `openssl` pkg and update all `default` tests ([4cd351a](4cd351adbc))

### Continuous Integration

* enable Vagrant-based testing using GitHub Actions ([c79ce9a](c79ce9a9ae))

ci: enable FreeBSD Vagrant-based testing using GitHub Actions

* Semi-automated using https://github.com/myii/ssf-formula/pull/308

## [2.6.2](https://github.com/saltstack-formulas/nginx-formula/compare/v2.6.1...v2.6.2) (2021-03-30)

### Bug Fixes

* **servers_config:** fixup 05994e1 ([c03729a](c03729ae32))

fix(servers_config): fixup 05994e1

## [2.6.1](https://github.com/saltstack-formulas/nginx-formula/compare/v2.6.0...v2.6.1) (2021-03-29)

### Bug Fixes

* **servers_config:** remove service depedency ([05994e1](05994e1b17))

### Code Refactoring

* **servers_config:** remove unused loop ([3825557](3825557070))

### Continuous Integration

* **kitchen+ci:** include `passenger` suite [skip ci] ([0bbe686](0bbe68619f))

### Tests

* standardise use of `share` suite & `_mapdata` state [skip ci] ([8ea3c82](8ea3c82be3))

fix(servers_config): remove service depedency

* servers_config should run without service dependency. Service is
  managed in servers.sls.
* dropped nginx_service_reload in favor of extending nginx_service
* wait for all file states (create and delete)
* create dirs for symlinked files

* Automated using https://github.com/myii/ssf-formula/pull/302

* Automated using https://github.com/myii/ssf-formula/pull/303

# [2.6.0](https://github.com/saltstack-formulas/nginx-formula/compare/v2.5.0...v2.6.0) (2021-03-11)

### Bug Fixes

* **passenger:** various fixes ([7271c9d](7271c9d16c))
* **pkg:** add inline EPEL repo configuration for Amazon Linux 2 ([ae6375c](ae6375cccc))

### Continuous Integration

* **gemfile+lock:** use `ssf` customised `kitchen-docker` repo [skip ci] ([123d13e](123d13e2f4))
* **kitchen+ci:** make rubocop happy [skip ci] ([eedfc56](eedfc56b41))
* **kitchen+ci:** use latest pre-salted images (after CVE) [skip ci] ([63d32a4](63d32a40b1))
* **kitchen+gitlab-ci:** use latest pre-salted images [skip ci] ([b4411c6](b4411c61d3))
* **pre-commit:** update hook for `rubocop` [skip ci] ([2a23743](2a23743fca))

### Features

* **config:** validate config before applying ([b396b24](b396b24fe4))

### Tests

* **config:** fix for Amazon Linux 2 & Oracle Linux 7/8 ([ab39c8f](ab39c8f7c3))

Check nginx config before deploying & various passenger fixes

* correctly set dependencies in configuration
* update RPM repo key
* add tests for passenger installation as nginx module
* update test matrix

* Automated using https://github.com/myii/ssf-formula/pull/299

* Automated using https://github.com/myii/ssf-formula/pull/297

* Automated using https://github.com/myii/ssf-formula/pull/296

* Automated using https://github.com/myii/ssf-formula/pull/295

* Automated using https://github.com/myii/ssf-formula/pull/294

* Automated using https://github.com/myii/ssf-formula/pull/293

* Automated using https://github.com/myii/ssf-formula/pull/292

* Automated using https://github.com/myii/ssf-formula/pull/290

# [2.5.0](https://github.com/saltstack-formulas/nginx-formula/compare/v2.4.1...v2.5.0) (2021-01-04)

### Continuous Integration

* **commitlint:** ensure `upstream/master` uses main repo URL [skip ci] ([0ecd767](0ecd767e86))
* **gitlab-ci:** add `rubocop` linter (with `allow_failure`) [skip ci] ([5c9f6d4](5c9f6d4d71))

### Features

* **context:** pass `nginx` to snippets and server_config contexts ([8641f0d](8641f0d79a))

feat(context): pass `nginx` to snippets and server_config contexts

* Automated using https://github.com/myii/ssf-formula/pull/278

* Automated using https://github.com/myii/ssf-formula/pull/277

## [2.4.1](https://github.com/saltstack-formulas/nginx-formula/compare/v2.4.0...v2.4.1) (2020-12-16)

### Continuous Integration

* **gemfile.lock:** add to repo with updated `Gemfile` [skip ci] ([bcd67a6](bcd67a6d46))
* **gitlab-ci:** use GitLab CI as Travis CI replacement ([f988e6d](f988e6d8f5))
* **kitchen:** use `saltimages` Docker Hub where available [skip ci] ([a45ffb6](a45ffb66ae))
* **kitchen+travis:** remove `master-py2-arch-base-latest` [skip ci] ([86f0a57](86f0a5705a))
* **pre-commit:** add to formula [skip ci] ([cb98ed0](cb98ed05c6))
* **pre-commit:** enable/disable `rstcheck` as relevant [skip ci] ([093c38e](093c38eae7))
* **pre-commit:** finalise `rstcheck` configuration [skip ci] ([33ce43d](33ce43dcec))
* **travis:** add notifications => zulip [skip ci] ([a288342](a288342070))
* **workflows/commitlint:** add to repo [skip ci] ([437b28a](437b28af25))

### Styles

* **libtofs.jinja:** use Black-inspired Jinja formatting [skip ci] ([66f4ea7](66f4ea7ed9))

* Automated using https://github.com/myii/ssf-formula/pull/275

* Automated using https://github.com/myii/ssf-formula/pull/274

* Automated using https://github.com/myii/ssf-formula/pull/273

* Automated using https://github.com/myii/ssf-formula/pull/267

* Automated using https://github.com/myii/ssf-formula/pull/265

* Automated using https://github.com/myii/ssf-formula/pull/263

* Automated using https://github.com/myii/ssf-formula/pull/262

* Automated using https://github.com/myii/ssf-formula/pull/259