Octavia: Remove unnecessary neutronclient package

The neutron cli is no longer used since the dependent patch was merged.
Also CentOS/RHEL 7 is no longer supported so the logic for that old
OS version can be removed.

Depends-on: https://review.opendev.org/c/openstack/tripleo-ansible/+/838960
Change-Id: I018811a07283644ae7445c92ced958542f97b0e4

deployment/octavia/octavia-worker-container-puppet.yaml

@@ -155,24 +155,12 @@ outputs:
             mode: "{{ item.mode }}"
           with_items:
             - { 'path': /var/log/containers/octavia, 'setype': container_file_t, 'mode': '0750' }
-        - block:
-            - name: Ensure packages required for configuring octavia are present for CentOS 7
-              package:
-                name:
-                  - python2-neutronclient
-                  - python2-openstackclient
-                  - openssl
-                state: present
-              when: ansible_facts['distribution_major_version'] is version(8, '<')
-
-            - name: Ensure packages required for configuring octavia are present for CentOS/RHEL 8
-              package:
-                name:
-                  - python3-neutronclient
-                  - python3-openstackclient
-                  - openssl
-                state: present
-              when: ansible_facts['distribution_major_version'] is version(8, '>=')
+        - name: Ensure package required for configuring octavia are present
+          package:
+            name:
+              - openssl
+              - python3-openstackclient
+            state: present
           when: {get_param: EnablePackageInstall}
         - name: enable virt_sandbox_use_netlink for healthcheck
           seboolean: