added Servlet 3 dependency

Importing this template application in Eclipse shows error as the snoop.jsp depends on the Servlet API. It will improve user first time experience.
Modified directions so that manually create repo file will be updated by Puppet module when run
nsupdate_plugin: Exception logging now includes error output from nsupdate command

Bug 1089697
Bugzilla link https://bugzilla.redhat.com/show_bug.cgi?id=1089697
When troubleshooting DNS record addition/removal errors, it is helpful to have the error output from the nsupdate command. Specifically in scenarios where record changes only fail <1% of the time.
Follow rc convention and use Rails.logger to avoid large amounts of text in the exception string
Automatic commit of package [openshift-origin-cartridge-phpmyadmin] release [1.22.1-1].
Automatic commit of package [openshift-origin-cartridge-jenkins-client] release [1.21.1-1].
Automatic commit of package [rubygem-openshift-origin-node] release [1.25.1-1].
Automatic commit of package [rubygem-openshift-origin-auth-remote-user] release [1.21.1-1].
Automatic commit of package [openshift-origin-cartridge-haproxy] release [1.25.1-1].
Automatic commit of package [rubygem-openshift-origin-frontend-apache-mod-rewrite] release [0.7.1-1].
Automatic commit of package [openshift-origin-cartridge-jbosseap] release [2.18.1-1].
Automatic commit of package [openshift-origin-cartridge-jbossews] release [1.24.1-1].
Automatic commit of package [openshift-origin-cartridge-postgresql] release [1.25.1-1].
Automatic commit of package [rubygem-openshift-origin-admin-console] release [1.22.1-1].
Automatic commit of package [openshift-origin-cartridge-jenkins] release [1.22.1-1].
Automatic commit of package [openshift-origin-cartridge-mysql] release [1.25.1-1].
Automatic commit of package [openshift-origin-cartridge-mock] release [1.20.1-1].
Automatic commit of package [rubygem-openshift-origin-msg-broker-mcollective] release [1.25.1-1].
Automatic commit of package [openshift-origin-logshifter] release [1.7.1-1].
Automatic commit of package [openshift-origin-msg-common] release [1.20.1-1].