Bring back Lvalert handler unittest
lvalert_handler
unittest was skipped during merge request !48 (merged). gracedb-client
is now in version 1.29-dev0
so we can bring back this unittest
lvalert_handler
unittest was skipped during merge request !48 (merged). gracedb-client
is now in version 1.29-dev0
so we can bring back this unittest