/groups endpoint has incorrect status code in openapi spec

[quarckster]

/groups endpoint has response 302 but in fact it returns 200 and it should fully be copied from https://github.com/RedHatInsights/insights-content-service/blob/master/openapi.json#L14

    "/groups": {
      "get": {
        "summary": "Get all rule groups and their relevant information",
        "description": "This simply redirects to an endpoint of the same name of a service called insights-operator-service",
        "parameters": [],
        "operationId": "getRuleGroups",
        "responses": {
          "302": {
            "description": "Found redirect: response containing all rule groups",
            "content": {
              "text/plain": {}
            }
          },