Add salt.utils.split_input()

salt/utils/__init__.py

@@ -2874,3 +2874,15 @@ def invalid_kwargs(invalid_kwargs, raise_exc=True):
         raise SaltInvocationError(msg)
     else:
         return msg
+
+
+def split_input(val):
+    '''
+    Take an input value and split it into a list, returning the resulting list
+    '''
+    if isinstance(val, list):
+        return val
+    try:
+        return val.split(',')
+    except AttributeError:
+        return str(val).split(',')