Update rest-api-spec

Author: pquentin

output/schema/validation-errors.json

@@ -119,6 +119,12 @@
       ],
       "response": []
     },
+    "snapshot.get": {
+      "request": [
+        "Request: missing json spec query parameter 'state'"
+      ],
+      "response": []
+    },
     "snapshot.repository_analyze": {
       "request": [
         "Request: query parameter 'register_operation_count' does not exist in the json spec"

specification/_json_spec/snapshot.get.json

@@ -91,6 +91,10 @@
       "verbose": {
         "type": "boolean",
         "description": "Whether to show verbose snapshot info or only show the basic info found in the repository index blob"
+      },
+      "state": {
+        "type": "list",
+        "description": "Filter snapshots by a comma-separated list of states. Valid state values are 'SUCCESS', 'IN_PROGRESS', 'FAILED', 'PARTIAL', or 'INCOMPATIBLE'."
       }
     }
   }