Disallow space between a function & opening paren

This rule was adopted in js-openstack-lib and I propose
we adopt it here as well. Whether we enforce a space or
no space, so long as it is consistent.

Change-Id: I5881b46ea16112729f2327484e56bcb138e0c386

.eslintrc

@@ -198,6 +198,12 @@ rules:
   # http://eslint.org/docs/rules/no-unexpected-multiline
   no-unexpected-multiline: 0
 
+  # Disallow space before function opening parenthesis
+  # http://eslint.org/docs/rules/space-before-function-paren
+  space-before-function-paren:
+    - 2
+    - "never"
+
   #############################################################################
   # Best Practices
   #############################################################################
@@ -861,12 +867,6 @@ rules:
    - 2
    - "always"
 
-  # Require or disallow space before function opening parenthesis
-  # http://eslint.org/docs/rules/space-before-function-paren
-  space-before-function-paren:
-    - 0
-    - "always"
-
   # require or disallow spaces inside parentheses
   # http://eslint.org/docs/rules/space-in-parens
   space-in-parens: