hbal: added a verbose setting and changed output
hbal: added a verbose setting and changed output

This patch added a verbose output and changed the output so that by
default it is less verbose and more clear.
apyrgio/ganeti,mbakke/ganeti,yiannist/ganeti,andir/ganeti,andir/ganeti,apyrgio/snf-ganeti,mbakke/ganeti,mbakke/ganeti,ganeti/ganeti,ganeti-github-testing/ganeti-test-1,grnet/snf-ganeti,dimara/ganeti,apyrgio/ganeti,leshchevds/ganeti,leshchevds/ganeti,andir/ganeti,yiannist/ganeti,ganeti/ganeti,onponomarev/ganeti,bitemyapp/ganeti,ganeti/ganeti,onponomarev/ganeti,apyrgio/snf-ganeti,leshchevds/ganeti,ganeti-github-testing/ganeti-test-1,grnet/snf-ganeti,bitemyapp/ganeti,yiannist/ganeti,dimara/ganeti