Approve 2018.11, supersede 2017.09

The Board of Directors voted to approve the 2018.11 Guideline at it's
meeting in Berlin on November 12, 2018.  This patch marks the new
2018.11 document as approved and the 2017.09 document as superseded.

Change-Id: I9d3df5436d48a7a1cf420a522c207a9a22e1d002

2017.09.json

@@ -3,7 +3,7 @@
   "schema": "1.6",
   "reference": "https://git.openstack.org/cgit/openstack/interop/schema/1.6.json",
   "source": "http://git.openstack.org/cgit/openstack/interop/",
-  "status": "approved",
+  "status": "superseded",
   "cutoff_score": "74",
   "target_approval": "2017-09-10",
   "replaces": "2017.01",

2018.11.json

@@ -73,7 +73,7 @@
       "target_approval": "2018.11",
       "replaces": "2018.02",
       "releases": ["ocata", "pike", "queens", "rocky", "stein"],
-      "status": "draft"
+      "status": "approved"
     }
   },
   "platforms": {

add-ons/orchestration.2018.11.json

@@ -58,7 +58,7 @@
       "target_approval": "orchestration.2018.11",
 	  "replaces": "orchestration.2018.02",
       "releases": ["ocata", "pike", "queens", "rocky", "stein"],
-      "status": "draft"
+      "status": "approved"
     }
   },
   "add-ons": {