Send Content-Type:application/json on request

[sarroutbi]

No description provided.

[sarroutbi]

@ansasaki , @sergio-correia : right now the best way to send expected headers is to code them manually. I will work to use .json() on reqwest on the final attestation PR #1038

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 59.21%. Comparing base (79b84e9) to head (68e8686).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
keylime-push-model-agent/src/main.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

Flag	Coverage Δ
e2e-testsuite	59.21% <0.00%> (-0.05%)	⬇️
upstream-unit-tests	59.21% <0.00%> (-0.05%)	⬇️

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/main.rs	51.23% <0.00%> (-0.94%)	⬇️

... and 4 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.