chore: minor fixes/additions to big query telemetry IT tests #17237

Job	Run time
group_id_check_for_maps_libraries	7m 22s
owlbot-yaml	1m 1s
gitignore_correctness	1m 10s
package_name_check	1m 11s
gapic-bom	1m 42s
generate-readme	1m 21s
root-pom	1m 41s
owlbot-py	1m 17s
	16m 45s

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