Rename config params user_registration_role -> userRegistrationRole,

enableroutes -> enableRoutes

Use camel case to align with the Kubernetes conventions.

Examples of the authentication configuration:

1. Require no authentication (this is the default if no authentication
configuration is specified):

apiVersion: airflow.apache.org/v1alpha1
kind: AirflowCluster
metadata:
  name: pk-cluster
spec:
  ui:
    authentication:
      type: none

2. Log in with OpenShift. In this example, users are assigned the Admin role upon
successful login:

apiVersion: airflow.apache.org/v1alpha1
kind: AirflowCluster
metadata:
  name: pk-cluster
spec:
  ui:
    enableRoutes: true
    authentication:
      type: openshift
      userRegistrationRole: Admin

3. Authenticate users against the database. This assumes, that users have been
created in the Airflow's database ahead of time, for example by using the airflow
create_user command, see also:
https://airflow.apache.org/docs/stable/cli-ref#create_user

apiVersion: airflow.apache.org/v1alpha1
kind: AirflowCluster
metadata:
  name: pk-cluster
spec:
  ui:
    enableRoutes: true
    authentication:
      type: database

api/v1alpha1/airflowcluster_types.go

@@ -193,7 +193,7 @@ type FlowerSpec struct {
 	Resources corev1.ResourceRequirements `json:"resources,omitempty"`
 	// EnableRoutes exposes Flower via OpenShit route.
 	// +optional
-	EnableRoutes bool `json:"enableroutes,omitempty"`
+	EnableRoutes bool `json:"enableRoutes,omitempty"`
 }
 
 func (s *FlowerSpec) validate(fp *field.Path) field.ErrorList {
@@ -239,7 +239,7 @@ type AirflowUISpec struct {
 	Resources corev1.ResourceRequirements `json:"resources,omitempty"`
 	// EnableRoutes exposes the Airflow UI via OpenShit route.
 	// +optional
-	EnableRoutes bool `json:"enableroutes,omitempty"`
+	EnableRoutes bool `json:"enableRoutes,omitempty"`
 	// Authentication defines the user authentication for Airflow UI.
 	// +optional
 	Authentication *AirflowUIAuthentication `json:"authentication,omitempty"`
@@ -475,7 +475,7 @@ type AirflowUIAuthentication struct {
 	// database. This setting directly translates to the AUTH_USER_REGISTRATION_ROLE setting
 	// in webserver_config.py. Airflow ships with a set of roles by default: Admin, User, Op,
 	// Viewer, Public.
-	UserRegistrationRole string `json:"user_registration_role,omitempty"`
+	UserRegistrationRole string `json:"userRegistrationRole,omitempty"`
 }
 
 // AirflowClusterStatus defines the observed state of AirflowCluster

config/crd/bases/airflow.apache.org_airflowclusters.yaml

@@ -929,7 +929,7 @@ spec:
             flower:
               description: Spec for Flower component.
               properties:
-                enableroutes:
+                enableRoutes:
                   description: EnableRoutes exposes Flower via OpenShit route.
                   type: boolean
                 image:
@@ -1447,15 +1447,15 @@ spec:
                         database = users stored in the database can log in, openshift
                         = users with valid OpenShift credentials can log in).'
                       type: string
-                    user_registration_role:
+                    userRegistrationRole:
                       description: 'Select the Airflow role that is assigned to the
                         user when first registered in the database. This setting directly
                         translates to the AUTH_USER_REGISTRATION_ROLE setting in webserver_config.py.
                         Airflow ships with a set of roles by default: Admin, User,
                         Op, Viewer, Public.'
                       type: string
                   type: object
-                enableroutes:
+                enableRoutes:
                   description: EnableRoutes exposes the Airflow UI via OpenShit route.
                   type: boolean
                 image: