Alerting: Update mute timings provisioning API to support optimistic locking (#88731)

* add version to time-interval models
* set time interval fingerprint as version
* update to check provided version
* delete to check if version is provided in query parameter 'version'
* update integration tests
* update specs

pkg/services/ngalert/api/tooling/api.json

@@ -1713,6 +1713,9 @@
       "$ref": "#/definitions/TimeIntervalItem"
      },
      "type": "array"
+    },
+    "version": {
+     "type": "string"
     }
    },
    "type": "object"
@@ -2800,6 +2803,9 @@
       "$ref": "#/definitions/TimeIntervalItem"
      },
      "type": "array"
+    },
+    "version": {
+     "type": "string"
     }
    },
    "type": "object"
@@ -5780,6 +5786,17 @@
       "name": "name",
       "required": true,
       "type": "string"
+     },
+     {
+      "description": "Version of mute timing to use for optimistic concurrency. Leave empty to disable validation",
+      "in": "query",
+      "name": "version",
+      "type": "string"
+     },
+     {
+      "in": "header",
+      "name": "X-Disable-Provenance",
+      "type": "string"
      }
     ],
     "responses": {
@@ -5863,6 +5880,12 @@
       "schema": {
        "$ref": "#/definitions/ValidationError"
       }
+     },
+     "409": {
+      "description": "GenericPublicError",
+      "schema": {
+       "$ref": "#/definitions/GenericPublicError"
+      }
      }
     },
     "summary": "Replace an existing mute timing.",