Replace ntp with chrony

Chrony is the new default timesync service, but we still were installing
ntp by default. Let's replace the ntp package install with an explicit
chrony install.

Change-Id: Ib6494c6d2745d3573365eca9aae76d677654fbd2
Related-Blueprint: tripleo-chrony

elements/overcloud-ceph-storage/install.d/package-installs-overcloud-ceph-storage

@@ -1 +1 @@
-ntp_package
+chrony_package

elements/overcloud-ceph-storage/pkg-map

@@ -1,5 +1,5 @@
 {
   "default": {
-    "ntp_package": "ntp"
+    "chrony_package": "chrony"
   }
 }

elements/overcloud-compute/install.d/package-installs-overcloud-compute

@@ -2,7 +2,7 @@ dpdk_package
 driverctl_package
 libvirt_package
 nfs_package
-ntp_package
+chrony_package
 pacemaker_remote_package
 sasl_scram_package
 tuned_profiles_cpu_partitioning_package

elements/overcloud-compute/pkg-map

@@ -4,7 +4,7 @@
     "driverctl_package": "driverctl",
     "libvirt_package": "libvirt",
     "nfs_package": "nfs-utils",
-    "ntp_package": "ntp",
+    "chrony_package": "chrony",
     "pacemaker_remote_package": "pacemaker-remote",
     "sasl_scram_package": "cyrus-sasl-scram",
     "tuned_profiles_cpu_partitioning_package": "tuned-profiles-cpu-partitioning"

elements/overcloud-controller/install.d/package-installs-overcloud-controller

@@ -5,7 +5,7 @@ ipa_admintools_package
 ipa_client_package
 ipxe_bootimgs_package
 nfs_package
-ntp_package
+chrony_package
 pacemaker_package
 pcs_package
 python_openstackclient_package

elements/overcloud-controller/pkg-map

@@ -7,7 +7,7 @@
     "ipa_client_package": "ipa-client",
     "ipxe_bootimgs_package": "ipxe-bootimgs",
     "nfs_package": "nfs-utils",
-    "ntp_package": "ntp",
+    "chrony_package": "chrony",
     "python_openstackclient_package": "python-openstackclient",
     "pacemaker_package": "pacemaker",
     "pcs_package": "pcs"