Add imagestream 13-el7 so tests are passing

Signed-off-by: Petr "Stone" Hracek <[email protected]>

Author: phracek

Diff for: imagestreams/postgresql-centos.json

@@ -44,6 +44,24 @@
           "type": "Local"
         }
       },
+      {
+        "name": "13-el7",
+        "annotations": {
+          "openshift.io/display-name": "PostgreSQL 13 (CentOS 7)",
+          "openshift.io/provider-display-name": "Red Hat, Inc.",
+          "description": "Provides a PostgreSQL 13 database on CentOS 7. For more information about using this database image, including OpenShift considerations, see https://github.com/sclorg/postgresql-container/blob/master/README.md.",
+          "iconClass": "icon-postgresql",
+          "tags": "database,postgresql",
+          "version": "13"
+        },
+        "from": {
+          "kind": "DockerImage",
+          "name": "quay.io/centos7/postgresql-13-centos7:latest"
+        },
+        "referencePolicy": {
+          "type": "Local"
+        }
+      },
       {
         "name": "12-el7",
         "annotations": {