Allow DRBD8 to sync after sb1-pri with no changes
Allow DRBD8 to sync after sb1-pri with no changes

Currently the way we shutdown or startup disks seems to make DRBD8
unhappy. Until we rewrite the sequence of (de)activation, allow DRBD to
connect after a sb1-pri condition with no changes to the data.

Reviewed-by: imsnah


ganeti/ganeti,yiannist/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/ganeti,ganeti-github-testing/ganeti-test-1,dimara/ganeti,yiannist/ganeti,onponomarev/ganeti,dimara/ganeti,onponomarev/ganeti,bitemyapp/ganeti,ganeti/ganeti,yiannist/ganeti,bitemyapp/ganeti,andir/ganeti,andir/ganeti,mbakke/ganeti,leshchevds/ganeti,grnet/snf-ganeti,mbakke/ganeti,andir/ganeti,mbakke/ganeti,apyrgio/ganeti,ganeti/ganeti,apyrgio/snf-ganeti,grnet/snf-ganeti,leshchevds/ganeti,leshchevds/ganeti,apyrgio/snf-ganeti