node-proxy: Stop on remove, restart in upgrade

Change the openshift-origin-node-proxy package to stop the
openshift-node-web-proxy service that it includes when the package is
removed.

Change openshift-origin-node-proxy to condrestart (restart
if already running) openshift-node-web-proxy when the package is
upgraded.

This commit fixes bug 1060274.
Automatic commit of package [rubygem-openshift-origin-node] release [1.22.2-1].
Automatic commit of package [openshift-origin-cartridge-jbosseap] release [2.15.2-1].
Automatic commit of package [openshift-origin-cartridge-jbossews] release [1.21.2-1].
Automatic commit of package [openshift-origin-cartridge-postgresql] release [1.22.2-1].
Automatic commit of package [rubygem-openshift-origin-admin-console] release [1.19.2-1].
Automatic commit of package [openshift-origin-cartridge-jenkins] release [1.18.3-1].
Automatic commit of package [openshift-origin-cartridge-mysql] release [1.22.2-1].
Automatic commit of package [rubygem-openshift-origin-container-selinux] release [0.7.3-1].
Automatic commit of package [rubygem-openshift-origin-msg-broker-mcollective] release [1.22.2-1].
Automatic commit of package [openshift-origin-cartridge-php] release [1.22.2-1].
Automatic commit of package [openshift-origin-cartridge-mongodb] release [1.18.2-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.22.2-1].
Automatic commit of package [rubygem-openshift-origin-console] release [1.22.2-1].
Automatic commit of package [openshift-origin-cartridge-jbossas] release [1.22.2-1].
Automatic commit of package [rubygem-openshift-origin-common] release [1.21.2-1].
Automatic commit of package [openshift-origin-cartridge-ruby] release [1.22.2-1].
Automatic commit of package [openshift-origin-cartridge-perl] release [1.21.2-1].
Automatic commit of package [openshift-origin-broker-util] release [1.22.2-1].
Automatic commit of package [openshift-origin-cartridge-10gen-mms-agent] release [1.31.2-1].