Start web proxy cartridge in activate

Remove exclusion of starting the web proxy cartridge in activate
because it's possible the user has previously stopped their
application. If so, when activating, we need to start the web proxy
cartridge. If it's already started, it will be a no-op.

Bug 1022868
Automatic commit of package [rubygem-openshift-origin-msg-broker-mcollective] release [1.16.2-1].
Automatic commit of package [rubygem-openshift-origin-node] release [1.16.4-1].
Automatic commit of package [openshift-origin-broker-util] release [1.16.3-1].
Automatic commit of package [openshift-origin-cartridge-ruby] release [1.16.2-1].
Automatic commit of package [openshift-origin-cartridge-php] release [1.16.2-1].
Automatic commit of package [openshift-origin-node-util] release [1.16.2-1].
Automatic commit of package [openshift-origin-cartridge-python] release [1.16.4-1].
Automatic commit of package [rubygem-openshift-origin-container-selinux] release [0.3.2-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.16.4-1].
Automatic commit of package [rubygem-openshift-origin-console] release [1.16.4-1].
Automatic commit of package [openshift-origin-cartridge-jenkins-client] release [1.16.3-1].
Automatic commit of package [openshift-origin-msg-node-mcollective] release [1.16.3-1].
Merge pull request #3980 from ncdc/bz1022868

Merged by openshift-bot
Automatic commit of package [rubygem-openshift-origin-node] release [1.16.5-1].