webadmin: adding label tag to Host->Interface subtab

If there is a label on the interface/bond there will be a label tag next to
its name.
On mouse over there will be a tooltip with all the labels on the interface/
bond.

Change-Id: I997d85d894d79f14402157fcc51a0cdbfe2ff056
Bug-Url: https://bugzilla.redhat.com/10638021
Signed-off-by: Alona Kaplan <alkaplan@redhat.com>