Fix test run on RHEL8 nftables vs iptables

Centos8-Dockerfile

@@ -1,6 +1,7 @@
 # Centos8-Dockerfile
 FROM docker.io/pycontribs/centos:8
 RUN yum install -y iproute firewalld net-tools && \
-    systemctl disable nftables && \
-    systemctl enable firewalld && \
-    
+    sed -i 's/FirewallBackend=nftables/FirewallBackend=iptables/' /etc/firewalld/firewalld.conf && \
+    sed -i 's/IPv6_rpfilter=yes/IPv6_rpfilter=no/' /etc/firewalld/firewalld.conf && \
+    systemctl enable firewalld
+

handlers/main.yml

@@ -15,7 +15,6 @@
     port: 6556/tcp
     state: enabled
     permanent: yes
-    immediate: yes
 
 - name: ensure firewall reloaded
   command: firewall-cmd --reload

molecule/default/molecule.yml

@@ -5,20 +5,21 @@ driver:
   name: docker
 platforms:
   - name: rhel8
-    image: docker.io/pycontribs/centos:8
+    image: mycent8-builder:latest
+    #dockerfile: Centos8-Dockerfile
     privileged: True
     volume_mounts:
       - "/sys/fs/cgroup:/sys/fs/cgroup:rw"
     command: "/usr/sbin/init"
     pre_build_image: true
   - name: rhel7
-    image: docker.io/pycontribs/centos:7
-    dockerfile: Centos7-Dockerfile
+    image: mycent7-builder:latest
+    # dockerfile: Centos7-Dockerfile
     privileged: True
     volume_mounts:
       - "/sys/fs/cgroup:/sys/fs/cgroup:rw"
     command: "/usr/sbin/init"
-    pre_build_image: false
+    pre_build_image: true
 provisioner:
   name: ansible
 verifier: