[FAB-3182] CI failure delivery svc- goroutines not end
[FAB-3182] CI failure delivery svc- goroutines not end

Added polling logic to the check that ensures that goroutines
are not left running.

Change-Id: I513a680789ffca9073f8f45b5c2377fcd626aa1f
Signed-off-by: Yacov Manevich <632344b5da9bd743456189af4db4b56472defb8c@il.ibm.com>

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