This test was failing to authenticate using the admin credentials. These
should be available by default in the metadata store. This indicates that
the credentials are not successfully being syncd before the test is run.
This change increases the number of retries to 20 so that the services
are syncd before the test runs
* include mysql-metadata-storage extension in distribution, but without the GPL-licensed connector library
* Install mysql connector package
* use symlinks to avoid versioning issues
* add documentation for fetching the mysql connector
Suneet Saldanha
David Lim
Jonathan Wei