Delete namespace after tests when using helm (#7051)
Delete namespace after tests when using helm (#7051)

* Delete namespace after tests when using helm

Signed-off-by: Neil Hickey <04db33e5e47e4a37df22a3ce0e5b0774a4be8e5b@pivotal.io>

* Do not return error if namespace deletion fails

If the helm chart being deleted has the namespace manifest then the HelmDelete would've already deleted the namespace

geeknoid/istio,geeknoid/istio,smawson/istio,smawson/istio,smawson/istio,smawson/istio,geeknoid/istio,istio/istio,smawson/istio,istio/istio,istio/istio,geeknoid/istio,smawson/istio,istio/istio,istio/istio,geeknoid/istio,geeknoid/istio