Revert "Display node name instead of UUID in error message"
Revert "Display node name instead of UUID in error message"

This reverts commit fbff213691328562cc4029f3babaa2e72e2012c4.
When running hooks, the node name is used to identify nodes, not (as
wrongly assumed in the patch) the node UUID.

Signed-off-by: Thomas Thrainer <98bdeac947eb8ca18146e9ce7f092788ec242cd1@google.com>
Reviewed-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>

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