dhclient is missing in centos 8 stream

[Srinivasa Reddy]

What happened:
when enable octavia_network_type: "tenant" the deployment fails with "Destination directory /etc/dhcp does not exist" !

What you expected to happen:

How to reproduce it (minimal and precise):
a)installed the centos 8 stream minimal
b)enable octavia
c)set octavia_network_type: "tenant" option on gloabls and run deploy

**Environment**:
* OS (e.g. from /etc/os-release):
NAME="CentOS Stream"
VERSION="8"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Stream 8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://centos.org/"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux 8"
REDHAT_SUPPORT_PRODUCT_VERSION="CentOS Stream"

* Kernel (e.g. `uname -a`): 4.18.0-365.el8.x86_64 #1 SMP Thu Feb 10 16:11:23 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

* globals.yml
---
kolla_base_distro: "centos"
kolla_install_type: "source"
openstack_release: "13.0.2"
node_custom_config: "/etc/kolla/config"
kolla_internal_vip_address: "10.7.7.49"
docker_registry: 10.7.7.47:4000
docker_registry_insecure: "yes"
docker_namespace: "kolla"
neutron_plugin_agent: "openvswitch"
enable_cinder: "yes"
enable_magnum: "yes"
enable_octavia: "yes"
enable_prometheus: "yes"
enable_grafana: "yes"
glance_backend_ceph: "yes"
cinder_backend_ceph: "yes"
nova_backend_ceph: "yes"
nova_compute_virt_type: "qemu"
octavia_network_type: "tenant"
prechecks_enable_host_ntp_checks: "false"