Use https instead of ssh url since people prefer it

You don't have to have working ssh keys to run ./update
Fixes mariadb_ctrl unit tests
Improve REAME instructions for creating stubs

- Created sample stubs in templates

[#75861660]
Fix README after faulty push

[#75861660]
Fix bad link to bosh lite make_manifest_spiff_mysql script

[#75861660]
mariadb_ctrl turns off replication before running mysql_upgrade on all nodes

- [#75554548]
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Update README.md
Changing default stemcell to trusty_go_agent 2671
Update README.md
Update README.md
Update README.md
updates to README
Log time with mariadb_ctrl log entries

* also, add the makefake script to help make test fakes
[#76091850]
gra-log-purger and galera-healthcheck write pidfiles on start up [#76087362]
Add section to README about HAProxy dashboard [#76421146]