chore(bqjdbc): move extended test suite to monorepo #17427

Job	Run time
root-pom	1m 51s
owlbot-yaml	1m 8s
package_name_check	1m 9s
gitignore_correctness	1m 12s
generate-readme	1m 12s
gapic-bom	1m 40s
owlbot-py	1m 9s
group_id_check_for_maps_libraries	8m 14s
	17m 35s

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