Ganglia UI missing mod_php in apache

Add the libapache2-mod-php5 package to
fix missing php handler in apache
Merge pull request #27 from guarly/ubuntu_missing_apaches_mod_php

Ganglia UI missing mod_php in apache
Korrelate-specific conf.
Add support for splunk on storm (nimbus and supervisor) nodes.
kor-1915
Set sourcetype for each type of storm log file we're watching with
splunk.
kor-1915