Support multiple groups per method and complete the tests

Resolve the TODO of extra testing now that new AJUR is
available.
Support defining multiple group for the same method.

Test: mm CollectorHostsideLibTest CollectorDeviceLibTest -j16
tradefed.sh run commandAndExit template/local_min --template:map
test=CollectorDeviceLibTest
tradefed.sh run commandAndExit template/local_min --template:map
test=CollectorHostsideLibTest
Bug: 70660306

Change-Id: I6d2c2d0d7bbdddac9bdb5bf80ca731ce9a5b4043