Added support for the authorized users field on the instance module (#627)

Author: ezilber-akamai

docs/modules/instance.md

@@ -127,6 +127,7 @@ Manage Linode Instances, Configs, and Disks.
 | `region` | <center>`str`</center> | <center>Optional</center> | The location to deploy the instance in. See the [Linode API documentation](https://api.linode.com/v4/regions).   |
 | `image` | <center>`str`</center> | <center>Optional</center> | The image ID to deploy the instance disk from.  **(Conflicts With: `disks`,`configs`)** |
 | `authorized_keys` | <center>`list`</center> | <center>Optional</center> | A list of SSH public key parts to deploy for the root user.   |
+| `authorized_users` | <center>`list`</center> | <center>Optional</center> | A list of usernames.   |
 | `root_pass` | <center>`str`</center> | <center>Optional</center> | The password for the root user. If not specified, one will be generated. This generated password will be available in the task success JSON.   |
 | `stackscript_id` | <center>`int`</center> | <center>Optional</center> | The ID of the StackScript to use when creating the instance. See the [Linode API documentation](https://techdocs.akamai.com/linode-api/reference/get-stack-scripts).   |
 | `stackscript_data` | <center>`dict`</center> | <center>Optional</center> | An object containing arguments to any User Defined Fields present in the StackScript used when creating the instance. Only valid when a stackscript_id is provided. See the [Linode API documentation](https://techdocs.akamai.com/linode-api/reference/get-stack-scripts).   |

plugins/modules/instance.py

@@ -351,6 +351,11 @@
             "A list of SSH public key parts to deploy for the root user."
         ],
     ),
+    "authorized_users": SpecField(
+        type=FieldType.list,
+        element_type=FieldType.string,
+        description=["A list of usernames."],
+    ),
     "root_pass": SpecField(
         type=FieldType.string,
         no_log=True,