add tests for InvalidCertificate. // Fix contains to use Debug. #2107

Job	Run time
towncrier_check	1m 0s
check_if_release_branch	3s
changed_files	57s
build mirrord CLI	0s
lint	6m 20s
integration_tests	13m 45s
check-rust-docs	4m 28s
lint_markdown	0s
macos_tests	16m 53s
test_agent	3m 20s
test_agent_image	6m 31s
test_cli_image	15m 14s
e2e (docker)	11m 18s
e2e (containerd)	10m 35s
vscode_e2e_on_release_branch	0s
intellij_e2e_on_release_branch	0s
ci	1s
	1h 30m 25s

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