Add documetation for delete protection for instances & volumes

Author: vishesh92

source/adminguide/storage.rst

@@ -1005,6 +1005,42 @@ True. Instances created from this service offering will have their disks reset
 upon reboot. See `“Creating a New Compute
 Offering” <service_offerings.html#creating-a-new-compute-offering>`_.
 
+Volume delete protection
+~~~~~~~~~~~~~~~~~~~~~~~~
+
+CloudStack provides a feature to protect volumes from accidental deletion. When
+delete protection is enabled for a volume, it cannot be deleted through the
+UI or API. It can only be delete after removing delete protection from the
+volume.
+
+Delete protection can be enabled for a volume via updateVirtualMachine API.
+.. code:: bash
+
+   cmk update volume id=<volume id> deletionprotection=true
+
+To remove delete protection, use the following command:
+.. code:: bash
+
+   cmk update volume id=<volume id> deletionprotection=false
+
+To enable/disable delete protection for a volume using the UI, follow these steps:
+
+#. Log in to the CloudStack UI as a User or admin.
+
+#. In the navigation menu on the left, click Volumes under Storage.
+
+#. Choose the volume for which you want to enable/disable delete protection.
+
+#. Click on the Edit button |editbutton.png|
+
+#. Toggle the Delete Protection switch to enable or disable delete protection.
+
+#. Click Ok button to save the changes.
+
+.. note::
+   If the volume is part of another ACS service like autoscaling groups or CKS,
+   delete protection is ignored.
+
 
 Volume Deletion and Garbage Collection
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

source/adminguide/virtual_machines.rst

@@ -424,6 +424,43 @@ The following table explains how an Instance name is displayed in different scen
       <i.n> represents the value of the global configuration - instance.name
 
 
+Instance delete protection
+--------------------------
+
+CloudStack provides a feature to protect Instances from accidental deletion.
+When delete protection is enabled for an instance, it cannot be deleted through
+the UI or API. It can only be delete after removing delete protection from the
+instance.
+
+Delete protection can be enabled for an instance via updateVirtualMachine API.
+.. code:: bash
+
+   cmk update virtualmachine id=<instance id> deletionprotection=true
+
+To remove delete protection, use the following command:
+.. code:: bash
+
+   cmk update virtualmachine id=<instance id> deletionprotection=false
+
+To enable/disable delete protection for an instance using the UI, follow these steps:
+
+#. Log in to the CloudStack UI as a User or admin.
+
+#. In the navigation menu on the left, click Instances under Compute.
+
+#. Choose the Instance for which you want to enable/disable delete protection.
+
+#. Click on the Edit button |editbutton.png|
+
+#. Toggle the Delete Protection switch to enable or disable delete protection.
+
+#. Click Ok button to save the changes.
+
+.. note::
+   If the instance is part of another ACS service like autoscaling groups or CKS,
+   delete protection is ignored.
+
+
 Changing the Service Offering for an Instance
 ---------------------------------------------