Capsule install fix for the inf_generators.

[kenlautner]

Pr #315 Introduced a bug with capsule update from the OS where the capsule update fails and shows up as error: missing file %hs. This fixes that bug by correctly putting the FirmwareIntegrityFilename into the new directory with FirmwareFilename.

Fixes Issue #351

Tested on Intel physical platforms.

[Javagedes]

@kenlautner Thank you for catching this. The tests for inf_generator and inf_generator2 will need to be updated to reflect the %13% addition. Let me know if you have any issues with that. Once done I'll merge and do a release.

[codecov]

Codecov Report

Patch coverage: 100.00% and no project coverage change.

Comparison is base (96ed4cf) 78.65% compared to head (7068d77) 78.65%.

❗ Current head 7068d77 differs from pull request most recent head bd05700. Consider uploading reports for the commit bd05700 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #352   +/-   ##
=======================================
  Coverage   78.65%   78.65%           
=======================================
  Files          47       47           
  Lines        6742     6742           
=======================================
  Hits         5303     5303           
  Misses       1439     1439           

Impacted Files	Coverage Δ
edk2toollib/windows/capsule/inf_generator.py	95.31% <100.00%> (ø)
edk2toollib/windows/capsule/inf_generator2.py	100.00% <100.00%> (ø)

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