testing: add ikev1-rekey-connswitch

- this scenario tests and has results from using 50c18f831
testing: added ikev1-rekey-connswitch cherry-picked to TESTLIST as WIP
confread: don't print an error for a missing left or right
- bug introduced in b892803c
- also: improve debug logging for certain cases
Merge branch 'master' into 2014-algo
WIP: IKEv2_ENCR_CAMELLIA_CBC should not be in padding exclusion :P