Adds prometheus export point to the agent pod. (#2983) #13967

Job	Run time
towncrier_check	11s
check_if_release_branch	1s
changed_files	5s
build mirrord CLI	0s
test_agent	3m 23s
lint	3m 45s
check-rust-docs	1m 6s
integration_tests	12m 24s
macos_tests	25m 1s
test_agent_image	6m 29s
test_cli_image	6m 27s
lint_markdown	0s
intellij_e2e_on_release_branch	0s
e2e (docker)	12m 22s
vscode_e2e_on_release_branch	0s
e2e (containerd)	14m 17s
ci	1s
	1h 25m 32s

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