Install will occasionally fail on virtual machines
Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1226457
The installation will occasionally fail on virtual machines. This is due to the extra time which is taken for tomcat to start up and generate keys. The key generation requires entropy which is difficult to get on VMs which are headless.
Fixes #10654 : Increase the number of times which wget will retry, and the pause between each retry.
This seems to give tomcat enough time to actually start up on a smaller machine.