Update install docs - DRBD module parameters
Update install docs - DRBD module parameters

In the example ensure that the DRBD options are always passed to the
module even if it's loaded before /etc/modules is processed.

Signed-off-by: Petr Pudlak <9d19625f8ee825a2c398462ed335cbcf98f79c32@google.com>
Reviewed-by: Hrvoje Ribicic <be5828fca31f89218048bec4189e30a581aa65da@google.com>

leshchevds/ganeti,apyrgio/ganeti,dimara/ganeti,yiannist/ganeti,leshchevds/ganeti,ganeti/ganeti,ganeti/ganeti,andir/ganeti,mbakke/ganeti,ganeti/ganeti,onponomarev/ganeti,dimara/ganeti,grnet/snf-ganeti,andir/ganeti,bitemyapp/ganeti,bitemyapp/ganeti,yiannist/ganeti,grnet/snf-ganeti,leshchevds/ganeti,onponomarev/ganeti,mbakke/ganeti,apyrgio/ganeti,mbakke/ganeti,andir/ganeti,yiannist/ganeti