Adds prometheus export point to the agent pod. #13643

Job	Run time
check_if_release_branch	1s
towncrier_check	11s
changed_files	10s
build mirrord CLI	0s
integration_tests	15m 41s
lint	12m 25s
check-rust-docs	4m 17s
lint_markdown	0s
macos_tests	37m 4s
test_agent	3m 23s
test_agent_image	6m 36s
test_cli_image	15m 44s
e2e (docker)	11m 52s
e2e (containerd)	11m 23s
intellij_e2e_on_release_branch	0s
vscode_e2e_on_release_branch	0s
ci	1s
	1h 58m 48s

Provide feedback