### Motivation
if you deploy pulsar using the helm chart and disable monitoring with
```
extras:
dashboard: no
```
but you have the ingress of the dashboard set to true
```
dashboard:
ingress:
enabled: true
```
the helm chart will create an ingress that points to a non-existing service because the dashboard itself was not deployed.
### Modifications
I've added the same check that is already in place in dashboard-service and dashboard-deployment
### Verifying this change
I dont know of any automated tests, i tested it manually. In the end it's the same "if" that is already in place in dashboard-service and dashboard-deployment
### Does this pull request potentially affect one of the following parts:
Affects deployment via helm chart. An unwanted ingress object is suppressed.
### Documentation
no documentation need
13dabe6edf