[FIX][URGENT] Check for platform while fetching last test on master

[Tarun-Arora]

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This PR is a fix to #869, also check the platform name while fetching the last completed master test.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (0a0c07c) 86.62% compared to head (24aaf14) 86.62%.

❗ Current head 24aaf14 differs from pull request most recent head 1845a11. Consider uploading reports for the commit 1845a11 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #874   +/-   ##
=======================================
  Coverage   86.62%   86.62%           
=======================================
  Files          35       35           
  Lines        3678     3678           
  Branches      744      744           
=======================================
  Hits         3186     3186           
  Misses        354      354           
  Partials      138      138           

Flag	Coverage Δ
unittests	86.62% <100.00%> (ø)

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Files Changed	Coverage Δ
mod_ci/controllers.py	82.59% <100.00%> (ø)

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[Tarun-Arora]

I force pushed just to retrigger GH actions failing due to #825