Fix typo that escaped review in connector.py

There was a typo (cann't) that escaped review of the
Huawei SDSHypervisor connector.  This patch fixes that
typo.

It also adds a period to one of the log messages to be
consistent with the rest of the messages.

Change-Id: Iddb6639ebdbb5facdf47800fc783330d674bff2f
Merge "Fix typo that escaped review in connector.py"