[automerger skipped] LSTM: require input layer norm weights to be omitted in case CIFG is used. am: e465f8e659 am: 60cb34becd -s ours
am: 7c2f483f69 -s ours
am skip reason: change_id I57bc578606132a2c44c71ab63dd7645dcc001302 with SHA1 0480af9aa8 is in history

Change-Id: I56f4af48d70e84d28b45828c972b7106190de08d