Merge branch 'fix/graf_iface_lag' into 'master'

Fix graph_interface_load_lag.j2 view sum iface load

See merge request !4179

(cherry picked from commit 9b742369)

73270fce Fix graph_interface_load_lag.j2 view sum iface load
3 jobs for !4180 with cherry-pick-9b742369 in 13 minutes and 8 seconds (queued for 1 second)
merge request