Switch all iallocator calls to the new one
Switch all iallocator calls to the new one

After the refactor, the old calls are not working anymore, so we switch
to the new ones.

Signed-off-by: René Nussbaumer <bc755ac45a0e799d1d490cba76febc56d80cc5fc@google.com>
Reviewed-by: Michael Hanselmann <68b67885ff74281219b4a4be33cc20fd45078d7c@google.com>

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