Update docker-py and requests version ranges

Leave the pinned versions in requirements.txt alone, as there's an
incompatibility between PyInstaller and requests 2.5.2 and 2.5.3, and by
extension with docker-py 1.1.0.

Signed-off-by: Aanand Prasad <[email protected]>

setup.py

@@ -27,10 +27,10 @@ def find_version(*file_paths):
 install_requires = [
     'docopt >= 0.6.1, < 0.7',
     'PyYAML >= 3.10, < 4',
-    'requests >= 2.2.1, < 2.5.0',
+    'requests >= 2.2.1, < 2.6',
     'texttable >= 0.8.1, < 0.9',
     'websocket-client >= 0.11.0, < 1.0',
-    'docker-py >= 1.0.0, < 1.1.0',
+    'docker-py >= 1.0.0, < 1.2',
     'dockerpty >= 0.3.2, < 0.4',
     'six >= 1.3.0, < 2',
 ]