Filtered the content of requirements.txt

This sanitizes what goes into install_requires. External packaging tools such
as FPM fail when they see a requirement starting with '#'.

setup.py

@@ -97,9 +97,11 @@ else:
 
 libraries = ['ws2_32'] if sys.platform == 'win32' else []
 
-requirements = ''
 with open(salt_reqs) as f:
-    requirements = f.read()
+    lines = f.read().split('\n')
+    requirements = [
+        line for line in lines if (line and not line.startswith('#'))
+    ]
 
 
 setup_kwargs = {'name': NAME,