message: Adding a compilation error if TRT_VERSION < 7. Removing support for TRT 5 & 6
diff: @@ -25,6 +25,11 @@ limitations under the License.
  #if GOOGLE_CUDA && GOOGLE_TENSORRT
  +#if !IS_TRT_VERSION_GE(7, 0, 0, 0)
  + #error From version 2.6, we only support NVIDIA TensorRT version 7 or newer.
  + #error Please update your environment and relaunch the compilation.
  +#endif
  +
  namespace tensorflow {
  namespace tensorrt {
  namespace convert {
  