Set proposal to default stateful02 session proposal.

Change-Id: I3a84c6c8b0811c10187cf36a9553bc30244aa56c
Signed-off-by: Dana Kutenicsova <dkutenic@cisco.com>
Fixed update tunnel hanging.

Change-Id: Ia94bce78d4de8ca31a2c363c364bae39f6c71e5b
Signed-off-by: Dana Kutenicsova <dkutenic@cisco.com>
Fixed NPE and updated logging.

Change-Id: I9c2aaa2e35dad85ceccdeeb0a2fec704538ab43c
Signed-off-by: Dana Kutenicsova <dkutenic@cisco.com>
Merge changes I9c2aaa2e,Ia94bce78,I3a84c6c8

* changes:
  Fixed NPE and updated logging.
  Fixed update tunnel hanging.
  Set proposal to default stateful02 session proposal.