tree 00eb8a051c55b7064c51b969c8248737c08490ea
parent 7e4c91dbc42e0b251d03bfabf004551e7d34d0f3
author Antonio Barone <syntonyze@gmail.com> 1603984910 +0100
committer Antonio Barone <syntonyze@gmail.com> 1604651147 +0100

Place master1 and master2 onto two different ASGs

master1 and master2 should not be placed onto the same EC2 instance in
order to assure Gerrit reliability.

Separate master1 and master2 by placing them onto instances running
within two different autoscaling groups.

In order to avoid repetition, launch configuration and autoscaling
groups for masters have been moved to a nested template.

Bug: Issue 13587
Change-Id: If3ba1ad743a90bd3c2135022db87c2fc0afb5245