Fix for cherry-pick e8dddc3679,

The cherry-pick allows module parameters to convert int to float, fixing
bugs where a float type is required.  However, it used types from the
six library for python3 compatibility as well.  Since we don't have
six in 2.1.0 this was buggy.  Merging the unittests for the problem
here: adc158a499 made this buggy behaviour
apparent.

lib/ansible/module_utils/basic.py

@@ -1483,7 +1483,7 @@ class AnsibleModule(object):
         if isinstance(value, float):
             return value
 
-        if isinstance(value, (binary_type, text_type, int)):
+        if isinstance(value, (bytes, unicode, int)):
             return float(value)
 
         raise TypeError('%s cannot be converted to a float' % type(value))