OZG-4453 OZG-4670 create elastic operator; create user secret if not exists

ozgcloud-elastic-operator/pom.xml

.../main/java/de/ozgcloud/operator/CustomResourceStatus.java

...ava/de/ozgcloud/operator/ElasticCustomResourceStatus.java

...java/de/ozgcloud/operator/ElasticOperatorApplication.java

...or/src/main/java/de/ozgcloud/operator/OperatorConfig.java

...zgcloud/operator/common/kubernetes/KubernetesService.java

.../de/ozgcloud/operator/user/ElasticUserCustomResource.java

...java/de/ozgcloud/operator/user/ElasticUserReconciler.java

...a/de/ozgcloud/operator/user/ElasticUserSecretBuilder.java

...in/java/de/ozgcloud/operator/user/ElasticUserService.java

.../main/java/de/ozgcloud/operator/user/ElasticUserSpec.java

...gcloud/operator/user/ElasticUserUpdateControlBuilder.java

...oud/operator/common/kubernetes/KubernetesServiceTest.java

...loud/operator/common/kubernetes/NamespaceTestFactory.java

...zgcloud/operator/common/kubernetes/SecretTestFactory.java

...operator/user/ElasticCustomResourceStatusTestFactory.java

...d/operator/user/ElasticUserCustomResourceTestFactory.java

...e/ozgcloud/operator/user/ElasticUserReconcilerITCase.java

.../de/ozgcloud/operator/user/ElasticUserReconcilerTest.java

.../ozgcloud/operator/user/ElasticUserSecretBuilderTest.java