test-merge-subrepos: make test compatible with chg...
test-merge-subrepos: make test compatible with chg
The test checks the output of '.hg/blackbox.log' which will contain
logs corresponding to chg in case chg is running. Therefore, this commit
modifies the test to take chg into consideration while checking the
blackbox.log contents.
Test Plan:
Ran the test 'test-merge-subrepos.t' with and without the '--chg'
option.
Differential Revision:
https://phab.mercurial-scm.org/D925