Clean up the unnecessary sphinx from test-requirements.txt

1. Clean up the unnecessary sphinx from test-requirements.txt
2. when run `tox -e docs` in localhost, some files will be
created, it not belong to the code, shoule be ignore by the git

Change-Id: I2bae30fedfdc64fbbafbe0e96794597b564c2d54

.gitignore

@@ -56,8 +56,11 @@ doc/source/api/
 # pbr generates these
 AUTHORS
 ChangeLog
+doc/source/reference/api
 
 # Files created by releasenotes build
 releasenotes/build
+releasenotes/notes/reno.cache
+RELEASENOTES.rst
 
 *.log

test-requirements.txt

@@ -1,6 +1,7 @@
 # The order of packages is significant, because pip processes them in the order
 # of appearance. Changing the order has an impact on the overall integration
 # process, which may cause wedges in the gate later.
+
 hacking>=1.1.0,<1.2.0 # Apache-2.0
 
 fixtures>=3.0.0 # Apache-2.0/BSD
@@ -19,15 +20,9 @@ oslo.log>=3.36.0  # Apache-2.0
 #  deps = {[testenv]deps} coverage
 coverage!=4.4,>=4.0 # Apache-2.0
 
-# this is required for the sphinx extension
-sphinx!=1.6.6,!=1.6.7,>=1.6.2,<2.0.0;python_version=='2.7' # BSD
-sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4' # BSD
-
 # mocking framework
 mock>=3.0.0 # BSD
 requests_mock>=1.5.0 # Apache-2.0
 
 # Bandit security code scanner
 bandit>=1.1.0,<1.6.0 # Apache-2.0
-
-reno>=2.5.0 # Apache-2.0

tox.ini

@@ -15,6 +15,7 @@ deps =
   -c{env:UPPER_CONSTRAINTS_FILE:https://git.openstack.org/cgit/openstack/requirements/plain/upper-constraints.txt}
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
+  -r{toxinidir}/doc/requirements.txt
 commands =
   find . -type f -name "*.pyc" -delete
   stestr run --suppress-attachments {posargs}
@@ -26,6 +27,7 @@ deps =
   -c{toxinidir}/lower-constraints.txt
   -r{toxinidir}/test-requirements.txt
   -r{toxinidir}/requirements.txt
+  -r{toxinidir}/doc/requirements.txt
 
 [testenv:py27]
 basepython = python2.7