LU-14057 ptlrpc: don't log connection 'restored' inappropriately

LU-14057 ptlrpc: don't log connection 'restored' inappropriately

Reverse imports maintain a target->client connection which
does not support recovery as client don't run a recovery.
At every connection, the reverse import state goes from
NEW to RECOVER to FULL which triggers a `Connection restored`
log message, even if this is the first connection from
this client.

Suppress this log message for reverse import to avoid
this wrong logging.

Test-Parameters: trivial
Signed-off-by: Aurelien Degremont <degremoa@amazon.com>
Change-Id: I6f35b8d916a4ae535d55ba39b491f57e1553986c
Reviewed-on: https://review.whamcloud.com/40331
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Alexander Boyko <alexander.boyko@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>