Setup git on new machines with default push setting

[AnthonyAstige]

I'm tired of seeing the message shown below. Since servers are spun up all the time, the settings that will squelch this don't get saved. Just set it to the new git 2.X default after server is spun up and a script can ssh in.

Related

1. When git is setup on new servers by default, remove from vmsinstallscript installtion.
2. Doing this may implicitly solve Delay server ready #11