Add forceStop flag to provide facility to stop healing (#6718)

This PR also makes sure that we deal with HTTP request
count by ignoring the on-going heal operation, i.e
do not wait on itself.

cmd/api-response.go

@@ -608,7 +608,7 @@ func writeCustomErrorResponseJSON(w http.ResponseWriter, errorCode APIErrorCode,
 		Code:      apiError.Code,
 		Message:   errBody,
 		Resource:  reqURL.Path,
-		RequestID: "3L137",
+		RequestID: w.Header().Get(responseRequestIDKey),
 		HostID:    "3L137",
 	}
 	encodedErrorResponse := encodeResponseJSON(errorResponse)