Merge "CI: Remove useless pre task"

tests/pre.yml

@@ -42,13 +42,3 @@
       hostname:
         name: "{{ inventory_hostname }}"
       become: true
-
-    # NOTE(yoctozepto): CentOS 7 image uses myhostname plugin for NSS
-    # which creates issues with IPv6-only deployment by providing
-    # an IPv4 address for the current hostname (affects rabbitmq)
-    - name: Disable myhostname NSS plugin
-      become: true
-      replace:
-        path: /etc/nsswitch.conf
-        regexp: ' myhostname'
-        replace: ''