improve NTP package conflict handling (#12212)

Signed-off-by: bo.jiang <bo.jiang@daocloud.io>

roles/system_packages/tasks/main.yml

@@ -65,14 +65,19 @@
   tags:
     - bootstrap_os
 
-- name: Install packages requirements
+- name: Manage packages
   package:
-    name: "{{ pkgs | dict2items | selectattr('value', 'ansible.builtin.all') | map(attribute='key') }}"
-    state: present
+    name: "{{ item.packages | dict2items | selectattr('value', 'ansible.builtin.all') | map(attribute='key') }}"
+    state: "{{ item.state }}"
   register: pkgs_task_result
   until: pkgs_task_result is succeeded
   retries: "{{ pkg_install_retries }}"
   delay: "{{ retry_stagger | random + 3 }}"
   when: not (ansible_os_family in ["Flatcar", "Flatcar Container Linux by Kinvolk"] or is_fedora_coreos)
+  loop:
+    - { packages: "{{ pkgs_to_remove }}", state: "absent", action_label: "remove" }
+    - { packages: "{{ pkgs }}", state: "present", action_label: "install" }
+  loop_control:
+    label: "{{ item.action_label }}"
   tags:
     - bootstrap_os