Unable to delete residual services

Previously, if the system tests experienced a problem deleting a
residual service, it would fail that entire test and we'd get no
results.  This continues to attempt cleanup, but doesn't fail the test
if cleanup fails.

[#80738252]
Merge 80738252-unable-to-delete-residual-service to master

[Completes #80738252]
Submodule updated