Replace chronyc "waitsync" with "makestep"

Prior to this patch we had the "chrony waitsync" command with a
hardcoded timeout of "20". Sometimes that wasn't enough when deploying
on some slower machines in my experience [0].

This patch is changing the "waitsync" command to "makestep", that way
we tell chronyd to make the system clock correct immediately (instead
of gradually correcting the time). It should be fine for our usecase
because these are ran during the deployment.

[0] http://paste.openstack.org/show/783888/

Closes-bug: #1867362
Change-Id: I07057eb089585f43346c44a03ae50aa2ac837fd7
Signed-off-by: Lucas Alvares Gomes <lucasagomes@gmail.com>
(cherry picked from commit 373a27163e)

deployment/timesync/chrony-baremetal-ansible.yaml

@@ -122,7 +122,7 @@ outputs:
         - name: Ensure chrony has been restarted
           meta: flush_handlers
         - name: Ensure system is NTP time synced
-          command: chronyc waitsync 20
+          command: chronyc makestep
       ansible_group_vars:
         chrony_role_action: all
         chrony_ntp_servers: {get_param: NtpServer}

firstboot/userdata_timesync.yaml

@@ -74,7 +74,7 @@ resources:
             set -x
             if [ "$service" = "chrony" ]; then
                 if command -v chronyc >/dev/null; then
-                    chronyc waitsync 20
+                    chronyc makestep
                 else
                     echo "No chronyc available, skipping sync"
                 fi