add k8s labels tab and assign/delete actions
there are no limit rules for labels_key and labels_value in this patch
test reproduction:
in a duplex all-in-one contrainerized env:
list all k8s labels: click "labels" tap host detail page on sysinv
hosts panel
assign new k8s labels: click "Assign Kube Label" button on "labels"
tap (shown on locked controllers only)
delete k8s labels: click "Delete Labels" button on each related row
(shown on locked controllers only)
in a simpex all-in-one contrainerized env:
need edit related code on env and restart service "horizon" to show the
assige/delete buttons.
Story: 2004470
Task: 28160
Change-Id: I4d86fcca3c2fca9c6902f376f28b7519d8bbde39
Signed-off-by: Yan Chen <yan.chen@intel.com>
Signed-off-by: SidneyAn <ran1.an@intel.com>