vzmigrate: add ability to increase verbosity

Now one can specify "-v -v" (or "-vv") to further increase verbosity,
up to three ("-vvv"). Verbosity of 2 used to add -v to rsync, while
3 adds -v to ssh/scp.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
2 files changed