add tests.txt for running tests with tox requirements

requirements/base.txt

@@ -5,6 +5,7 @@ msgpack>=0.5,!=0.5.5
 PyYAML
 MarkupSafe
 requests>=1.0.0
-tornado>=4.2.1,<6.0
+tornado>=4.2.1,<6.0; python_version < '3'
+tornado>=4.2.1,<5.0; python_version >= '3.4'
 # Required by Tornado to handle threads stuff.
 futures>=2.0; python_version < '3.0'

requirements/dev.txt

@@ -1,10 +1,6 @@
 -r base.txt
 
 mock>=2.0.0
-apache-libcloud>=0.14.0
-boto>=2.32.1
-boto3>=1.2.1
-moto>=0.3.6
 SaltPyLint>=v2017.3.6
 pytest>=3.5.0
 git+https://github.com/saltstack/pytest-salt.git@master#egg=pytest-salt

requirements/tests.txt

@@ -0,0 +1,38 @@
+-r requirements/zeromq.txt
+-r requirements/dev.txt
+-r requirements/pytest.txt
+apache-libcloud>=1.0.0
+boto>=2.32.1
+boto3>=1.2.1
+moto>=0.3.6
+docker; sys.platform != 'win32'
+docker==2.7.0; sys.platform == 'win32'
+virtualenv
+setuptools>=30
+mock<1.1.0
+six
+timelib
+coverage
+requests
+keyring==5.7.1
+python-gnupg
+python-etcd==0.4.2
+GitPython
+supervisor; python_version < '3'
+kubernetes<4.0
+psutils
+pyvmomi
+setproctitle
+python.cherrypy; sys.platform != 'win32' and sys.platform != 'darwin'
+cherrypy; sys.platform != 'win32' and sys.platform != 'darwin'
+pyinotify; sys.platform != 'win32' and sys.platform != 'darwin'
+jsonschema
+strict_rfc3339
+rfc3987
+jinja2
+pyOpenSSL
+ioflo
+dnspython
+SaltTesting=2017.6.1
+junos-eznc
+jxmlease