Fix bug 1104228 - missing php-5.4 scl in PATH

Make sure all PHP 5.4 apps have "/opt/rh/php54/root/usr/bin" path
in OPENSHIFT_PHP_PATH_ELEMENT env var.

https://bugzilla.redhat.com/show_bug.cgi?id=1104228

Also, fix migration (wrong current version).
Automatic commit of package [rubygem-openshift-origin-node] release [1.26.2-1].
Automatic commit of package [openshift-origin-cartridge-jbossews] release [1.25.2-1].
Automatic commit of package [rubygem-openshift-origin-container-selinux] release [0.9.2-1].
Automatic commit of package [openshift-origin-cartridge-php] release [1.26.2-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.26.2-1].
Automatic commit of package [openshift-origin-node-proxy] release [1.24.2-1].
Automatic commit of package [openshift-origin-cartridge-nodejs] release [1.27.2-1].
Merge pull request #5484 from VojtechVitek/bug_1104228

Merged by openshift-bot
WIP Node Platform - Add tests for OOM Plugin
Bug 1106413: psql wrapper always return zero even if psql command is already failed
Merge pull request #5493 from jhadvig/psql_rc

Merged by openshift-bot
Merge pull request #5494 from jwhonce/wip/oom_plugin_test

Merged by openshift-bot
add conditional inclusion of rails-observers which is it's own gem in rails4