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
Include npm CLI scripts in the user's PATH - https://trello.com/c/eTwC7UbD/174-support-for-javascript-cli-build-tools-from-npm
Bug 1097959 - Add THROTTLER_CHECK_PERIOD to detune Throttler

* Add THROTTLER_CHECK_PERIOD element to /etc/sysconfig/watchman to
  allow Operator to set period for checking cgroup counters
Bug 1088623 - Removed unused .uservars directory references
Merge pull request #5418 from jwhonce/bug/1097959

Merged by openshift-bot
Merge pull request #5420 from jwhonce/bug/1088623

Merged by openshift-bot
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].