agent: don't spam /var/log/messages
agent: don't spam /var/log/messages

The "Host x metadata updated" message occurs frequently and should be
at INFO level so that it's not written to /var/log/messages.

Change-Id: I3df3cc61c74953cc345fed84c70e67f5a961d83a
Signed-off-by: Greg Padgett <3af508f6206cdc15d61fd615066fc83e4b020700@redhat.com>

oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha,oVirt/ovirt-hosted-engine-ha