In disconnected install, imagestreams still points to internal registry even though it is disabled with openshift_hosted_manage_registry=false.

Issue

• In disconnected install, imagestreams still points to internal registry even though it is disabled with openshift_hosted_manage_registry=false.

#  oc get is -n openshift
...
...
jenkins                                        docker-registry.default.svc:5000/openshift/jenkins                                        1,2
mariadb                                        docker-registry.default.svc:5000/openshift/mariadb                                        10.2,10.1
mongodb                                        docker-registry.default.svc:5000/openshift/mongodb                                        2.4,2.6,3.2 + 1 more...
mysql                                          docker-registry.default.svc:5000/openshift/mysql                                          5.5,5.6,5.7
nginx                                          docker-registry.default.svc:5000/openshift/nginx                                          1.10,1.12,1.8
nodejs                                         docker-registry.default.svc:5000/openshift/nodejs                                         6,8,8-RHOAR + 2 more...
perl                                           docker-registry.default.svc:5000/openshift/perl                                           5.16,5.20,5.24
php                                            docker-registry.default.svc:5000/openshift/php                                            5.6,7.0,7.1 + 1 more...
postgresql                                     docker-registry.default.svc:5000/openshift/postgresql                                     9.2,9.4,9.5 + 1 more...
python                                         docker-registry.default.svc:5000/openshift/python                                         2.7,3.3,3.4 + 2 more...
...
...