WIP Cartridge Refactor - Add new environment variables

* OPENSHIFT_{short name}_IDENT    = {cartridge vendor}:{software name}:{software version}:{cartridge version}
* OPENSHIFT_NAMESPACE             = {namespace}
* OPENSHIFT_PRIMARY_CARTRIDGE_DIR = $OPENSHIFT_HOMEDIR/{cartridge vendor}-{software name} for cartridge on gear categorized as web_framework