eNB should be keep UE context longer than T311 timer after UL failure is detected in layer2.
Configuration file(GENERIC-LTE-EPC) sets T311 to 10s, so eNB keep UE context up to 20s.

If TB buffer's all regments recieved is NOT equal RLC's all regments recieved, discard that TB buffer.

fix issue that when RRCConnectionRelease happened by UL failure DL SCD doesn't send DCCH(RRCConnectionRelease) to UE because ul_out_of_sync is set to 1

reset release_timer from 200ms to 100ms because of flightmode on/off issue, reduce ul failure timer log

add remove ue info to freeList when RRCConnectionReestablish occurs and for ru_thread to remove the info