Handle HTTP 400 errors somewhat more sanely.

Change-Id: I49c4225adfd552f0dd01c80cc3053ff2599eb47f

monikerclient/exceptions.py

@@ -31,6 +31,10 @@ class Unknown(RemoteError):
     pass
 
 
+class BadRequest(RemoteError):
+    pass
+
+
 class Forbidden(RemoteError):
     pass
 

monikerclient/v1/__init__.py

@@ -74,7 +74,9 @@ class Client(object):
         """
         response = func(*args, **kw)
 
-        if response.status_code in (401, 403):
+        if response.status_code == 400:
+            raise exceptions.BadRequest(response.json['errors'])
+        elif response.status_code in (401, 403):
             raise exceptions.Forbidden()
         elif response.status_code == 404:
             raise exceptions.NotFound()