[VIRTS-2878] Planners v2 API Pytests

[bleepbop]

Description

Pytests for the Planners v2 API.

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Verified tests pass for multiple versions of python using tox.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• [NA] I have made corresponding changes to the documentation
• [NA] I have added tests that prove my fix is effective or that my feature works

[codecov]

Codecov Report

Merging #2299 (d6075cb) into master (75399ca) will increase coverage by 0.09%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2299      +/-   ##
==========================================
+ Coverage   72.31%   72.40%   +0.09%     
==========================================
  Files         107      108       +1     
  Lines        7837     7863      +26     
==========================================
+ Hits         5667     5693      +26     
  Misses       2170     2170              

Impacted Files	Coverage Δ
app/api/v2/handlers/planner_api.py	100.00% <0.00%> (ø)

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[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication