refactoring reboot procedure

roles/mellanox_drivers/tasks/main.yml

@@ -140,17 +140,17 @@
 # A REBOOT IS NEEDED AFTER SUCCESSFUL INSTALL
 #
 - name: restart machine
-  shell: "sleep 5; sudo shutdown -r now"
-  async: 2
-  poll: 1
-  ignore_errors: true
+  reboot:
+#  shell: "sleep 5; sudo shutdown -r now"
+#  async: 2
+#  poll: 1
+#  ignore_errors: true
   become: true
-  become_user: root
   when: reboot_now
 
-- name: waiting for server to come back
-  wait_for_connection: sleep=60 timeout=600 delay=60
-  when: reboot_now
+#- name: waiting for server to come back
+#  wait_for_connection: sleep=60 timeout=600 delay=60
+#  when: reboot_now
 
 - name: enable roce_mode setting
   service: name=roce_mode state=started enabled=yes