add "The server failed to resume the transaction" to pymssql

add "The server failed to resume the transaction" to pymssql

Added error "The server failed to resume the transaction" to the list of
error strings for the pymssql driver in determining a disconnect scenario,
as observed by one user using pymssql under otherwise unknown conditions as
leaving an unusable connection in the connection pool which fails to ping
cleanly.

Fixes: #11822
Change-Id: I1cf98046978b10775f19531878b597d32b056f13