Groovy clean tests clean-up

Groovy clean tests clean-up

- test labels are modified to set standards for writing tests
   - labels are not expected to be technical
   - labels need to be in simple language that ANYONE can understand
   - labels should not have exact method names except for some mocking
- variables are modified to give highlight to ONLY important parameter of test
   - wild cards are preferred when possible i.e. for exception cases

Issue-ID: CPS-588
Signed-off-by: emaclee <lee.anjella.macabuhay@est.tech>
Change-Id: I3d42471e7aa4bc61f962ad19cc1f237f6985a9a2