Dont check description for pyparsing error

Revert this commit when [1] is fixed.

[1] pyparsing/pyparsing#504

gnocchi/tests/functional/gabbits/aggregates-with-metric-ids.yaml

@@ -645,7 +645,8 @@ tests:
         $.code: 400
         $.description.cause: "Invalid operations"
         $.description.reason: "/^Fail to parse the operations string/"
-        $.description.detail: /^Expected \'\)\', found end of text  \(at char 15\), \(line:1, col:16\)/
+        # TODO(tobias-urdin): Reenable this when https://github.com/pyparsing/pyparsing/issues/504 is fixed
+        #$.description.detail: /^Expected \'\)\', found end of text  \(at char 15\), \(line:1, col:16\)/
 
     - name: get invalid metric operations
       POST: /v1/aggregates