Add unit test coverage check when creating a PR

Author: samanthajayasinghe

.github/PULL_REQUEST_TEMPLATE.md

@@ -10,8 +10,17 @@ _Resolves #_
 
 ### Special notes for your reviewer
 
-### Pre-checks (if applicable)
+### Unit Test Coverage
+#### Guidelines
+- If it's a new sub-command or new function to an existing sub-command, please cover at least 50% of the code
+- If it's a bug fix for an existing sub-command, please cover 70% of the code 
+ 
+#### Test coverage checks  
+- [ ] Added unit tests
+- [ ] Created jira card to add unit test
+- [ ] This PR may not need unit tests
 
+### Pre-checks (if applicable)
 - [ ] Ran unit tests locally
 - [ ] Validated the changes in a cluster
 - [ ] Included documentation changes with PR