changed collection arg to argregate on 2.4 network modules (#26649)

* changed collection arg to argregate on 2.4 network modules

* replace users with aggregate in eos_user, junos_user, nxos_user

* added version_added to places where we replaced users with aggregate in the docs

* fix ios_static_route test

* update tests to reference aggregate instead of collection/users

lib/ansible/modules/network/system/net_user.py

@@ -28,15 +28,15 @@ DOCUMENTATION = """
 module: net_user
 version_added: "2.4"
 author: "Trishna Guha (@trishnag)"
-short_description: Manage the collection of local users on network device
+short_description: Manage the aggregate of local users on network device
 description:
   - This module provides declarative management of the local usernames
     configured on network devices. It allows playbooks to manage
-    either individual usernames or the collection of usernames in the
+    either individual usernames or the aggregate of usernames in the
     current running config. It also supports purging usernames from the
     configuration that are not explicitly defined.
 options:
-  collection:
+  aggregate:
     description:
       - The set of username objects to be configured on the remote
         network device. The list entries can either be the username
@@ -46,7 +46,7 @@ options:
     description:
       - The username to be configured on the remote network device.
         This argument accepts a string value and is mutually exclusive
-        with the C(collection) argument.
+        with the C(aggregate) argument.
         Please note that this option is not same as C(provider username).
   password:
     description:
@@ -114,7 +114,7 @@ EXAMPLES = """
     purge: yes
 - name: set multiple users to privilege level 15
   net_user:
-    collection:
+    aggregate:
       - name: netop
       - name: netend
     privilege: 15