Add UEFI log handler, use it to send UEFI count

[sarroutbi]

Resolves: #1020

[codecov]

Codecov Report

Attention: Patch coverage is 88.51351% with 17 lines in your changes missing coverage. Please review.

Project coverage is 62.71%. Comparing base (2a633dc) to head (764edd7).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
keylime/src/config/push_model.rs	38.46%	8 Missing ⚠️
keylime-push-model-agent/src/struct_filler.rs	61.53%	5 Missing ⚠️
keylime/src/uefi/uefi_log_handler.rs	96.66%	4 Missing ⚠️

Additional details and impacted files

Flag	Coverage Δ
e2e-testsuite	62.71% <88.51%> (+0.54%)	⬆️
upstream-unit-tests	62.71% <88.51%> (+0.54%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
keylime/src/cert.rs	92.10% <ø> (ø)
keylime/src/error.rs	7.64% <100.00%> (+0.44%)	⬆️
keylime/src/uefi/uefi_log_handler.rs	96.66% <96.66%> (ø)
keylime-push-model-agent/src/struct_filler.rs	83.33% <61.53%> (-3.19%)	⬇️
keylime/src/config/push_model.rs	45.05% <38.46%> (+1.03%)	⬆️

... and 4 files with indirect coverage changes

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[sarroutbi]

/packit retest-failed

[ansasaki]

We need to replace the sha2 usage with the openssl implementation

[ansasaki]

LGTM! Thanks for the changes

[ansasaki]

I think it is OK for now to parse in such ad-hoc way, but in future we should probably write a pest grammar to parse the UEFI log (and same for the IMA logs).