Build Cop: group issues for related tests when it makes sense

[tbpg]

Is your feature request related to a problem? Please describe.
If 10 Go subtests of a single test all fail, you get 10 separate issues filed at the same time.

Describe the solution you'd like
Group subtests into a single issue. We could do this by splitting the test name on "/" and only keying on the first part. Not sure how this would affect other languages.

Describe alternatives you've considered
Keep all of the issues separate. This is very noisy.

Additional context
https://github.com/GoogleCloudPlatform/golang-samples/issues?utf8=%E2%9C%93&q=is%3Aissue+%22bigquery%2Fsnippets%2Fquerying%3A+TestQueries%22+label%3A%22buildcop%3Aissue%22

[tbpg]

Another example: https://github.com/GoogleCloudPlatform/python-docs-samples/issues?utf8=%E2%9C%93&q=is%3Aissue+is%3Aopen+label%3Abuildcop%3Aissue+dlp.inspect_content_test

[tbpg]

cc @fhinkel

[tbpg]

I queried to get all issues for test cases with a slash in the name:

title,test_case,repo_url
"""bigquery/snippets/querying: TestQueries/group/createTableAndWidenQuery failed""",TestQueries/group/createTableAndWidenQuery,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryBatch failed""",TestQueries/group/queryBatch,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryClusteredTable failed""",TestQueries/group/queryClusteredTable,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryDisableCache failed""",TestQueries/group/queryDisableCache,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""profiler: TestAgentIntegration/profiler-test-go11113 failed""",TestAgentIntegration/profiler-test-go11113,"""https://api.github.com/repos/googleapis/google-cloud-go"""
"""bigquery/snippets/querying: TestQueries/group/queryWithNamedParams failed""",TestQueries/group/queryWithNamedParams,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryWithStructParam failed""",TestQueries/group/queryWithStructParam,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryDryRun failed""",TestQueries/group/queryDryRun,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryWithDestinationCMEK failed""",TestQueries/group/queryWithDestinationCMEK,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryWithTimestampParam failed""",TestQueries/group/queryWithTimestampParam,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""profiler: TestAgentIntegration/profiler-test-gomaster failed""",TestAgentIntegration/profiler-test-gomaster,"""https://api.github.com/repos/googleapis/google-cloud-go"""
"""profiler: TestAgentIntegration/profiler-test-go1138 failed""",TestAgentIntegration/profiler-test-go1138,"""https://api.github.com/repos/googleapis/google-cloud-go"""
"""bigquery/snippets/querying: TestQueries/group/queryLegacyLargeResults failed""",TestQueries/group/queryLegacyLargeResults,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryWithDestination failed""",TestQueries/group/queryWithDestination,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryLegacy failed""",TestQueries/group/queryLegacy,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryWithPositionalParams failed""",TestQueries/group/queryWithPositionalParams,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""profiler: TestAgentIntegration/profiler-test-go114 failed""",TestAgentIntegration/profiler-test-go114,"""https://api.github.com/repos/googleapis/google-cloud-go"""
"""bigquery/snippets/querying: TestQueries/group/queryBasic failed""",TestQueries/group/queryBasic,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group failed""",TestQueries/group,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""profiler: TestAgentIntegration/profiler-test-go11217 failed""",TestAgentIntegration/profiler-test-go11217,"""https://api.github.com/repos/googleapis/google-cloud-go"""
"""bigquery/snippets/querying: TestQueries/group/queryPartitionedTable failed""",TestQueries/group/queryPartitionedTable,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""
"""bigquery/snippets/querying: TestQueries/group/queryWithArrayParams failed""",TestQueries/group/queryWithArrayParams,"""https://api.github.com/repos/GoogleCloudPlatform/golang-samples"""

Going to write a shortener for this case. This will not cover the python-docs-samples case (updated link: https://github.com/GoogleCloudPlatform/python-docs-samples/issues?q=is%3Aissue+label%3A%22buildcop%3A+issue%22+dlp.inspect_content_test+) since that does not need to be grouped by the test case name -- the package name somehow needs to be pulled apart.

[tbpg]

@tmatsuo, do you think this is something we should change in the Build Cop Bot? Or are we good to close this for now?

[tbpg]

Closing this for now. Filed #550 for a more specific case.