oo-accept-node: check allow_polyinstantiation

Check that the allow_polyinstantiation SELinux Boolean is enabled.
Delete old TODOs related to v2 switchover

Delete some old TODO comments that are obsolete now that the default
cartridge model has been changed to v2.
Automatic commit of package [openshift-origin-cartridge-jbossews] release [0.4.5-1].
Automatic commit of package [rubygem-openshift-origin-node] release [1.9.6-1].
Automatic commit of package [openshift-origin-cartridge-mysql] release [0.3.5-1].
Automatic commit of package [openshift-origin-cartridge-nodejs] release [1.10.5-1].
Automatic commit of package [openshift-origin-cartridge-haproxy] release [0.4.5-1].
Automatic commit of package [openshift-origin-broker-util] release [1.9.5-1].
Automatic commit of package [rubygem-openshift-origin-common] release [1.8.5-1].
Automatic commit of package [openshift-origin-cartridge-postgresql] release [0.2.5-1].
Automatic commit of package [openshift-origin-cartridge-jbossas] release [1.2.5-1].
Automatic commit of package [openshift-origin-cartridge-ruby] release [0.4.5-1].
Automatic commit of package [openshift-origin-cartridge-php] release [0.4.5-1].
Automatic commit of package [openshift-origin-cartridge-diy] release [0.4.5-1].
Automatic commit of package [openshift-origin-cartridge-perl] release [0.4.5-1].
Automatic commit of package [openshift-origin-cartridge-python] release [0.4.5-1].
Automatic commit of package [openshift-origin-cartridge-mock] release [0.4.5-1].
Automatic commit of package [rubygem-openshift-origin-controller] release [1.9.6-1].
Automatic commit of package [openshift-origin-cartridge-phpmyadmin] release [1.9.5-1].
Automatic commit of package [rubygem-openshift-origin-console] release [1.9.6-1].