Use dict.copy instead of deepcopy
Use dict.copy instead of deepcopy

Due to a bug in python, deepcopy does not work on
the dictionaries we use for SSH updates. This patch
replaces the use of deepcopy by the built-in copy
function of dictionaries.

Signed-off-by: Helga Velroyen <2d0126b1ec6f9ec5cbec4a7012aa14faeaef10f5@google.com>
Reviewed-by: Oleg Ponomarev <c100474c6090841e9d55cde74d38d81efd269b8d@google.com>

ganeti/ganeti,ganeti/ganeti,ganeti/ganeti,onponomarev/ganeti,yiannist/ganeti,mbakke/ganeti,mbakke/ganeti,mbakke/ganeti,yiannist/ganeti,andir/ganeti,leshchevds/ganeti,andir/ganeti,yiannist/ganeti,onponomarev/ganeti,leshchevds/ganeti,andir/ganeti,leshchevds/ganeti