Add unit-test type to PR template

[samanthajayasinghe]

What type of PR is this?

feature

What this PR does / Why we need it?

some R's with only tests and unit-test type cover those PR's

Pre-checks (if applicable)

• Ran unit tests locally
• Validated the changes in a cluster
• Included documentation changes with PR

[codecov-commenter]

Codecov Report

Merging #299 (5bf8a52) into main (4fd23c7) will increase coverage by 0.44%.
Report is 8 commits behind head on main.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #299      +/-   ##
==========================================
+ Coverage   45.49%   45.93%   +0.44%     
==========================================
  Files          53       53              
  Lines        3750     3753       +3     
==========================================
+ Hits         1706     1724      +18     
+ Misses       1774     1754      -20     
- Partials      270      275       +5     

see 2 files with indirect coverage changes

[supreeth7]

/lgtm

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: samanthajayasinghe, supreeth7

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[openshift-ci]

@samanthajayasinghe: all tests passed!

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