Deployment Require HTPasswd Identity Provider already Exists

[dmc5179]

Deployment of the workshop requires that the HTPasswd Identity provider be at least deployed. It doesn't need to contain the actual workshop users. The Operator will create those. If the HTPasswd Identity provider is not installed, for example on a default OpenShift cluster, the follow error will show when the DevSecOps workshop is deployed

Unexpected templating type error occurred on ({{ cluster_oauth.resources[0].spec | json_query("identityProviders[?type=='HTPasswd']") | join }}): 'NoneType' object is not iterable

[jharmison-redhat]

I think we should move this fix into the operator, rather than documenting a manual fix. It should be able to react to one not existing, IMO.