Add a get function for balancing parameters
Add a get function for balancing parameters

...so that the maintenance daemon can ask WConfD whether and how
it should do balancing.

Signed-off-by: Klaus Aehlig <4ce51de36d9068cd7db2eec1151e0f3f95419008@google.com>
Reviewed-by: Petr Pudlak <9d19625f8ee825a2c398462ed335cbcf98f79c32@google.com>

andir/ganeti,mbakke/ganeti,leshchevds/ganeti,mbakke/ganeti,leshchevds/ganeti,onponomarev/ganeti,bitemyapp/ganeti,ganeti/ganeti,leshchevds/ganeti,andir/ganeti,ganeti/ganeti,ganeti/ganeti,mbakke/ganeti,onponomarev/ganeti,andir/ganeti,bitemyapp/ganeti