Add unwrap/panic detection for Push Model files

[sarroutbi]

[codecov[bot]]

Codecov Report

:x: Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 58.08%. Comparing base (ce52222) to head (7779c89).

Files with missing lines	Patch %	Lines
keylime-push-model-agent/src/registration.rs	0.00%	1 Missing :warning:
keylime-push-model-agent/src/url_selector.rs	0.00%	1 Missing :warning:

Additional details and impacted files

Flag	Coverage Δ
e2e-testsuite	58.08% <50.00%> (-0.02%)	:arrow_down:
upstream-unit-tests	58.08% <50.00%> (-0.02%)	:arrow_down:

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

Files with missing lines	Coverage Δ
keylime-push-model-agent/src/attestation.rs	45.65% <ø> (ø)
keylime-push-model-agent/src/auth.rs	41.53% <ø> (ø)
...ylime-push-model-agent/src/context_info_handler.rs	65.45% <ø> (ø)
keylime-push-model-agent/src/response_handler.rs	56.97% <ø> (ø)
keylime-push-model-agent/src/state_machine.rs	17.81% <100.00%> (ø)
keylime-push-model-agent/src/struct_filler.rs	24.03% <ø> (ø)
keylime-push-model-agent/src/registration.rs	47.22% <0.00%> (ø)
keylime-push-model-agent/src/url_selector.rs	63.33% <0.00%> (ø)

... and 3 files with indirect coverage changes

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