Add async workflow integration test step to CI

[taylanisikdemir]

What changed?
Async workflow integration test is introduced in #5678. This PR is adding it to CI pipelines for both pull request and master.

This new integration test only runs async workflow specific test cases and doesn't run the whole suit. Should finish within a few minutes. It also doesn't generate coverage because we don't need that for integration tests.

How did you test it?
Checked the new CI step running as part of this PR.

[coveralls]

Pull Request Test Coverage Report for Build 018dce49-4aac-4c06-8363-21070aa8006c

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 76 unchanged lines in 16 files lost coverage.
• Overall coverage increased (+0.01%) to 62.787%

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Files with Coverage Reduction	New Missed Lines	%
common/task/weighted_round_robin_task_scheduler.go	1	88.06%
common/persistence/historyManager.go	2	66.67%
common/persistence/sql/common.go	2	72.73%
common/persistence/sql/sqlplugin/postgres/db.go	2	85.0%
common/persistence/sql/sqlplugin/postgres/task.go	2	73.4%
service/matching/db.go	2	73.23%
common/log/tag/tags.go	3	50.18%
common/persistence/nosql/nosqlplugin/cassandra/tasks.go	4	76.09%
service/history/task/transfer_standby_task_executor.go	4	87.01%
common/persistence/nosql/nosql_task_store.go	5	61.95%

Totals
Change from base Build 018dce2d-61e6-4ca6-bd29-a148af6ec27c:	0.01%
Covered Lines:	92799
Relevant Lines:	147800

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💛 - Coveralls