When local transactions are aborted from the frontend, it is done
via a dedicated message which we failed to account for. This can
happen only as an alternative to CommitLocalTransactionRequest,
hence needs to be handled only in FrontendReadWriteTransaction.
Change-Id: I350a103f132da473d397a7d5f7de7e45850911f3
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
(cherry picked from commit
79418d81cd6accb12ee52d33d5add6f495d7db3c)