feat: purge ntpsec and sntp packages

tasks/migrate_ntpd_to_esxi_timesync.yml

 ---
 - name: purge NTPd package
   ansible.builtin.package:
-    name: "ntp"
+    name: 
+      - "ntp"
+      - "ntpsec"
+      - "sntp"
     state: absent
+    purge: "{{ true if ansible_os_family == 'Debian' else omit }}"
 
 # details can be found at sdvuda10 project, issue #2
 - name: make sure open-vm-tools are installed