Clean up development dependency specifications

dev_requirements.txt

@@ -0,0 +1,3 @@
+-e .
+httpretty>=0.8.10
+mock;python_version<="2.7"

requirements27.txt

@@ -1,14 +0,0 @@
-certifi==2015.9.6.2
-enum34==1.0.4
-funcsigs==0.4
-futures==3.0.3
-httpretty==0.8.10
-isodate==0.5.4
-keyring==5.6
-mock==1.3.0
-oauthlib==1.0.3
-pbr==1.8.1
-requests==2.7.0
-requests-oauthlib==0.5.0
-six==1.10.0
-chardet==2.3.0

requirements35.txt

@@ -1,12 +0,0 @@
-funcsigs==0.4
-futures==3.0.3
-httpretty==0.8.10
-isodate==0.5.4
-keyring==5.6
-mock==1.3.0
-oauthlib==1.0.3
-pbr==1.8.1
-requests==2.7.0
-requests-oauthlib==0.5.0
-six==1.10.0
-chardet==2.3.0

tox.ini

@@ -4,31 +4,13 @@ skipsdist=True
 
 [testenv]
 changedir=test
+setenv =
+    PYTHONPATH = {toxinidir}:{toxinidir}/msrest
+deps=
+    -rdev_requirements.txt
+    coverage
+    flake8
 commands=
     coverage run -m unittest discover -s . -p unittest*.py -t .. -v
     coverage report --fail-under=40 --omit=unittest*,*.tox*.py
     #flake8 .. --exclude=unittest*.py,doc,env --statistics
-
-[testenv:py27]
-deps=
-    -rrequirements27.txt 
-    coverage
-    flake8
-
-[testenv:py33]
-deps=
-    -rrequirements35.txt
-    coverage
-    flake8
-
-[testenv:py34]
-deps=
-    -rrequirements35.txt 
-    coverage
-    flake8
-
-[testenv:py35]
-deps=
-    -rrequirements35.txt 
-    coverage
-    flake8