Apply Uniform Category Information for failures

Dynamo uses - Failure as the category
ProtoTest uses - Failing as the category
So changing Failing to Failure to keep it uniform.

String replace [Category("Failing")] to [Category("Failure")] using Visual studio repalce



Failing tests can't be categorized as Smoke Test, consider removing this category from all failing tests. In some tests we are using "SmokeTests" as category and we need to unify this as well. You might need to update "SmokeTest/Smoke Test" to "SmokeTests"