fix(core): support failed health status style (#4372)
fix(core): support failed health status style (#4372)

add support for `health-status-Failed`. previously, instances in a
`Failed` state were getting the `Up` styling which is misleading.

Fixes spinnaker/spinnaker#2059
spinnaker/deck,icfantv/deck,ajordens/deck,ajordens/deck,spinnaker/deck,spinnaker/deck,spinnaker/deck,sgarlick987/deck,duftler/deck,icfantv/deck,duftler/deck,ajordens/deck,duftler/deck,ajordens/deck,sgarlick987/deck,icfantv/deck,sgarlick987/deck,sgarlick987/deck,icfantv/deck,duftler/deck