Change server monitor_poll default to 5 seconds.

After extensive testing by @akrzos, it was found that this fixes a
number of timing issues which are really just queue timing delays.  C&U
especially gets a lot snappier and the affect on the appliance CPU usage
was found to be negligible.

https://bugzilla.redhat.com/show_bug.cgi?id=1093222
Merge pull request #575 from Fryguy/change_default_configuration_values

Change server monitor_poll default to 5 seconds.