Add requirements.txt

It is nice to list packages required to run tools in the i18n repo
in requirements.txt.

Change-Id: Idcf10b551a1e08a98df13594124bc1b63e3987db

requirements.txt

@@ -0,0 +1,5 @@
+beautifulsoup4  # MIT
+oslo.log>=3.11.0  # Apache-2.0
+requests>=2.10.0,!=2.12.2,!=2.13.0  # Apache-2.0
+six>=1.9.0  # MIT
+PyYAML>=3.10.0  # MIT

test-requirements.txt

@@ -7,4 +7,3 @@ hacking<0.11,>=0.10.2 # Apache-2.0
 Babel>=2.3.4 # BSD
 sphinx>=1.5.1 # BSD
 oslosphinx>=4.7.0 # Apache-2.0
-PyYAML>=3.10.0 # MIT

tox.ini

@@ -7,7 +7,8 @@ skipsdist = True
 install_command = pip install -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt} {opts} {packages}
 usedevelop = True
 setenv = VIRTUAL_ENV={envdir}
-deps = -r{toxinidir}/test-requirements.txt
+deps = -r{toxinidir}/requirements.txt
+       -r{toxinidir}/test-requirements.txt
 
 [testenv:venv]
 commands = {posargs}