Remove the create/gce* files from coverage.

Because the AVD type 'gce' is not supported by the acloud now.
Therefor, to add these related files to the omit items of .coveragerc.

Bug: 202820293
Test: . run_test.sh
Change-Id: Id6687c336a9a9bf9238bb69bea895512731bc47d
1 file changed