Debugging_OSE_UpperCase_In_Subdomain_Name

BZ:
  https://bugzilla.redhat.com/show_bug.cgi?id=1364533#c0
  
Error seen:

stderr: The Route "hello-openshift" is invalid.
spec.host: Invalid value: "hello-openshift.pkpcpGALng.example.com": host must conform to DNS 952 subdomain conventions

Traced it down to the use of the uppercase is violating a check.

OpenShift code:
https://github.com/openshift/origin/blob/master/pkg/route/api/validation/validation.go#L30

Validation is from Kubernetes:
Ends up using a regexp:
 https://github.com/kubernetes/kubernetes/blob/master/pkg/util/validation/validation.go#L124
 
 const dns1035LabelFmt string = "[a-z]([-a-z0-9]*[a-z0-9])?"
 
Looking at RFC-952
  https://tools.ietf.org/html/rfc952
  " No blank or space characters are permitted as part of a
   name. No distinction is made between upper and lower case.  The first
   character must be an alpha character. "
   
   
We believe the regexp in kubernetes should allow uppercase characters.

After reviewing this with team members concluded that it is customary to create actual host records as lowercase.
Lookups are case insensitve, but since k8bs is creating a record for a route, makes sense they are enforcing a lowercase.

In terms of QCI, we will downcase the string and pass in.