Remove --detailed-exitcodes flag from puppet agent
Remove --detailed-exitcodes flag from puppet agent

Calling --detailed-exitcodes flag causes the puppet agent to
exit with non-0 code upon successful execution (exit code 2) [1].

Delete the flag from call to the puppet agent.

[1] https://docs.puppetlabs.com/puppet/latest/reference/man/agent.html

Change-Id: I84ed978bdb8b95dc3074ec544ff91f44f8f58f9e
Related-bug: 1544967

stackforge/fuel-octane,stackforge/fuel-octane