Deprecate requests-requirements.txt

We have too many requirements files which makes keeping them in sync
hard. Start by deprecating requests-requirements.txt and use setup.py's
extra dependency groups instead.

pywikibot[security] installs requests[security] and pycparser!=2.14.
requests[security] installs pyOpenSSL>=0.14, cryptography>=1.3.4,
and idna>=2.0.0.[1]
This means that pywikibot[security] covers all the requirements in
requests-requirements.txt.

[1]: https://github.com/requests/requests/blob/master/setup.py#L98

Bug: T193476
Change-Id: I0d889513ac406206a977acc992c6deb8fd4a32b2

.appveyor.yml

@@ -85,7 +85,7 @@ install:
   - virtualenv env
   - env\Scripts\activate.bat
   - pip install -r dev-requirements.txt
-  - pip install -r requests-requirements.txt
+  - pip install -e .[security]
 
 build: off
 

.travis.yml

@@ -54,7 +54,7 @@ before_script:
 script:
   # Install security packages for requests to support HTTPS in site_detect
   - if [[ "$PYSETUP_TEST_EXTRAS" != '1' ]]; then
-      pip install mwoauth!=0.3.1 -r requests-requirements.txt ;
+      pip install -e .[mwoauth,security];
     fi
 
   - mkdir ~/.pywikibot

CONTENT.rst

@@ -34,8 +34,6 @@ The contents of the package
     | README-conversion.txt     | Guide to converting bot scripts from version 1       |
     |                           | of the Pywikibot framework to version 3              |
     +---------------------------+------------------------------------------------------+
-    | requests-requirements.txt | PIP requirements file for Appveyor builds            |
-    +---------------------------+------------------------------------------------------+
     | requirements.txt          | General PIP requirements file                        |
     +---------------------------+------------------------------------------------------+
     | setup.py                  | Installer script for Pywikibot 3.0 framework         |

docs/requirements-py3.txt

@@ -1,6 +1,6 @@
 # This is a PIP requirements file for building Sphinx documentation of pywikibot
 # using sphinx on python3.4.
-# requirements.txt and requests-requirements.txt are also needed
+# requirements.txt and pywikibot[security] are also needed
 
 sphinx
 sphinx-epytext>=0.0.4

requests-requirements.txt

@@ -1,3 +1,5 @@
+# This file is DEPRECATED! Use `pip install pywikibot[security]` instead.
+
 requests>=2.9,!=2.18.2
 
 # requests security extra

tox.ini

@@ -128,12 +128,12 @@ commands = {posargs}
 
 [testenv:doc]
 commands =
+    pip install -e .[security]
     make html -C ./docs
     findx -type f -name '*.rst' -not -path './.tox/*' : rstcheck --report warning --ignore-directives automodule,autoclass,autofunction
 basepython = python3.4
 deps =
     -rrequirements.txt
-    -rrequests-requirements.txt
     -rdocs/requirements-py3.txt
     findx >= 0.9.9
     rstcheck