OCM-5823 | feat: add break glass credentials endpoint

Add the new break glass credentials endpoint to the model

Related: OCM-5823

model/clusters_mgmt/v1/break_glass_credential_resource.model

@@ -0,0 +1,23 @@
+/*
+Copyright (c) 2024 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Manages a specific break glass credential.
+resource BreakGlassCredential {
+	// Retrieves the details of the break glass credential.
+	method Get {
+		out Body BreakGlassCredential
+	}
+}

model/clusters_mgmt/v1/break_glass_credential_type.model

@@ -0,0 +1,43 @@
+/*
+Copyright (c) 2024 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Representation of a break glass credential.
+class BreakGlassCredential {
+	// Username is the user which will be used for this credential.
+	Username String
+
+	// ExpirationTimestamp is the date and time when the credential will expire.
+	ExpirationTimestamp Date
+
+	// RevocationTimestamp is the date and time when the credential has been revoked.
+	RevocationTimestamp Date
+
+	// Status is the status of this credential
+	Status BreakGlassCredentialStatus
+
+	// Kubeconfig is the generated kubeconfig for this credential. It is only stored in memory
+	Kubeconfig String
+}
+
+// Status of the break glass credential.
+enum BreakGlassCredentialStatus {
+	Created
+	Issued
+	Expired
+	AwaitingRevocation
+	Revoked
+	Failed
+}

model/clusters_mgmt/v1/break_glass_credentials_resource.model

@@ -0,0 +1,53 @@
+/*
+Copyright (c) 2024 Red Hat, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+// Manages the break glass credentials of a cluster.
+resource BreakGlassCredentials {
+	// Retrieves the list of break glass credentials.
+	//
+	// IMPORTANT: This collection doesn't currently support paging or searching, so the returned
+	// `page` will always be 1 and `size` and `total` will always be the total number of break 
+	// glass credentials for this cluster.
+	method List {
+		// Index of the requested page, where one corresponds to the first page.
+		in out Page Integer = 1
+
+		// Number of items contained in the returned page.
+		in out Size Integer = 100
+
+		// Total number of items of the collection.
+		out Total Integer
+
+		// Retrieved list of break glass credentials.
+		out Items []BreakGlassCredential
+	}
+
+	// Adds a new break glass credential to the cluster.
+	method Add {
+		// Description of the break glass credential.
+		in out Body BreakGlassCredential
+	}
+
+	// Revokes all the break glass certificates signed by a specific signer.
+	method Delete {
+	}
+
+	// Reference to the service that manages a specific break glass credential.
+	locator BreakGlassCredential {
+		target BreakGlassCredential
+		variable ID
+	}
+}

model/clusters_mgmt/v1/cluster_resource.model

@@ -74,6 +74,11 @@ resource Cluster {
 		target ExternalConfiguration
 	}
 
+	// Reference to the resource that manages the break glass credentials.
+    locator BreakGlassCredentials {
+        target BreakGlassCredentials
+    }
+
 	// Reference to the resource that manages the cluster's provision shard.
 	locator ProvisionShard {
 		target ProvisionShard