Bug 2347: Minor fixes to correct log output

DOMConcurrentDataCommitCoordinator#handleException hard-codes the error
mapper to CAN_COMMIT_ERROR_MAPPER however this should be passed
in corresponding to the phase.

In TransactionCommitFailedExceptionMapper, the opNames for
PRE_COMMIT_MAPPER and CAN_COMMIT_ERROR_MAPPER are reversed, should be
"preCommit", "canCommit" respectively.

Change-Id: I6c0513f0f6265ec19de39476c95efefee53d2ee1
Signed-off-by: tpantelis <tpanteli@brocade.com>
(cherry picked from commit bda2f4ab9ecd693f85ff21e2bf94fe55ca90608b)
Merge "Bug 2347: Minor fixes to correct log output" into stable/helium