Adds test to test synchronizing between master repos and to test the
prevention of non-push/pull transactions (such as commit and strip).
Adds tests/getdb.sh to the ignored list. This is a script that provides the
database host, port, and name for the test. It must be in the form
"ip:port:databasename". The test assumes that the database name is unique and
doesn't already exist each time getdb.sh is called.