chore(release): 2.4.0 [skip ci]

# [2.4.0](https://github.com/saltstack-formulas/nginx-formula/compare/v2.3.3...v2.4.0) (2020-03-31)

### Bug Fixes

* **libtofs:** “files_switch” mess up the variable exported by “map.jinja” [skip ci] ([10b446e](10b446ed1e))

### Continuous Integration

* **kitchen:** avoid using bootstrap for `master` instances [skip ci] ([efebb0a](efebb0af6b))

### Features

* **add purge option:** purge sites option ([a373bda](a373bdab79))

AUTHORS.md

 
 Avatar|Contributor|Contributions
 :-:|---|:-:
-<img class='float-left rounded-1' src='https://avatars2.githubusercontent.com/u/10231489?v=4' width='36' height='36' alt='@myii'>|[@myii](https://github.com/myii)|53
+<img class='float-left rounded-1' src='https://avatars2.githubusercontent.com/u/10231489?v=4' width='36' height='36' alt='@myii'>|[@myii](https://github.com/myii)|58
 <img class='float-left rounded-1' src='https://avatars0.githubusercontent.com/u/1800660?v=4' width='36' height='36' alt='@aboe76'>|[@aboe76](https://github.com/aboe76)|46
 <img class='float-left rounded-1' src='https://avatars2.githubusercontent.com/u/1396878?v=4' width='36' height='36' alt='@gravyboat'>|[@gravyboat](https://github.com/gravyboat)|27
 <img class='float-left rounded-1' src='https://avatars0.githubusercontent.com/u/3374962?v=4' width='36' height='36' alt='@nmadhok'>|[@nmadhok](https://github.com/nmadhok)|24
 
 ---
 
-Auto-generated by a [forked version](https://github.com/myii/maintainer) of [gaocegege/maintainer](https://github.com/gaocegege/maintainer) on 2019-12-22.
+Auto-generated by a [forked version](https://github.com/myii/maintainer) of [gaocegege/maintainer](https://github.com/gaocegege/maintainer) on 2020-03-31.

CHANGELOG.md

 # Changelog
 
+# [2.4.0](https://github.com/saltstack-formulas/nginx-formula/compare/v2.3.3...v2.4.0) (2020-03-31)
+
+
+### Bug Fixes
+
+* **libtofs:** “files_switch” mess up the variable exported by “map.jinja” [skip ci] ([10b446e](https://github.com/saltstack-formulas/nginx-formula/commit/10b446ed1ed295e5bf75fcb437953df61b39ba9e))
+
+
+### Continuous Integration
+
+* **kitchen:** avoid using bootstrap for `master` instances [skip ci] ([efebb0a](https://github.com/saltstack-formulas/nginx-formula/commit/efebb0af6b4cda41a75d571fe5adc869b32febb7))
+
+
+### Features
+
+* **add purge option:** purge sites option ([a373bda](https://github.com/saltstack-formulas/nginx-formula/commit/a373bdab79e854c43c61de7edd65d460c73f0477))
+
 ## [2.3.3](https://github.com/saltstack-formulas/nginx-formula/compare/v2.3.2...v2.3.3) (2019-12-22)
 
 

FORMULA

 name: nginx
 os: Debian, Ubuntu, RedHat, Fedora, CentOS, Suse, openSUSE
 os_family: Debian, RedHat, Suse
-version: 2.3.3
+version: 2.4.0
 release: 1
 minimum_version: 2017.3
 summary: nginx formula

docs/AUTHORS.rst

      - Contributions
    * - :raw-html-m2r:`<img class='float-left rounded-1' src='https://avatars2.githubusercontent.com/u/10231489?v=4' width='36' height='36' alt='@myii'>`
      - `@myii <https://github.com/myii>`_
-     - 53
+     - 58
    * - :raw-html-m2r:`<img class='float-left rounded-1' src='https://avatars0.githubusercontent.com/u/1800660?v=4' width='36' height='36' alt='@aboe76'>`
      - `@aboe76 <https://github.com/aboe76>`_
      - 46
 
 ----
 
-Auto-generated by a `forked version <https://github.com/myii/maintainer>`_ of `gaocegege/maintainer <https://github.com/gaocegege/maintainer>`_ on 2019-12-22.
+Auto-generated by a `forked version <https://github.com/myii/maintainer>`_ of `gaocegege/maintainer <https://github.com/gaocegege/maintainer>`_ on 2020-03-31.

docs/CHANGELOG.rst

 Changelog
 =========
 
+`2.4.0 <https://github.com/saltstack-formulas/nginx-formula/compare/v2.3.3...v2.4.0>`_ (2020-03-31)
+-------------------------------------------------------------------------------------------------------
+
+Bug Fixes
+^^^^^^^^^
+
+
+* **libtofs:** “files_switch” mess up the variable exported by “map.jinja” [skip ci] (\ `10b446e <https://github.com/saltstack-formulas/nginx-formula/commit/10b446ed1ed295e5bf75fcb437953df61b39ba9e>`_\ )
+
+Continuous Integration
+^^^^^^^^^^^^^^^^^^^^^^
+
+
+* **kitchen:** avoid using bootstrap for ``master`` instances [skip ci] (\ `efebb0a <https://github.com/saltstack-formulas/nginx-formula/commit/efebb0af6b4cda41a75d571fe5adc869b32febb7>`_\ )
+
+Features
+^^^^^^^^
+
+
+* **add purge option:** purge sites option (\ `a373bda <https://github.com/saltstack-formulas/nginx-formula/commit/a373bdab79e854c43c61de7edd65d460c73f0477>`_\ )
+
 `2.3.3 <https://github.com/saltstack-formulas/nginx-formula/compare/v2.3.2...v2.3.3>`_ (2019-12-22)
 -------------------------------------------------------------------------------------------------------