UnixPB: Add various fixes for issues with tests failing on s390x platform hosts

[steelhead31]

Fixes #4274

Contains 3 commits that :

1. Update the SLES static docker containers to have some additional test packages
2. Add those same test packages into the playbook for non docker hosts
3. Add a role to perform some additional network configuration on s390x as these hosts seem to block multicast networking by default

Checklist

• commit message has one of the standard prefixes
• VPC/QPC not applicable for this PR

Currently testing this role, creating in draft for visibility

[steelhead31]

New role works on sles15

TASK [iptables : Ensure default IPv4 interface is detected] ****************************************************************
ok: [148.100.74.157] => {
    "changed": false,
    "msg": "All assertions passed"
}

TASK [iptables : Add Ubuntu multicast route now] ***************************************************************************
skipping: [148.100.74.157]

TASK [iptables : Add multicast INPUT rule for SLES, RHEL and Ubuntu] *******************************************************
ok: [148.100.74.157]

TASK [iptables : Add Ubuntu multicast OUTPUT rule] *************************************************************************
skipping: [148.100.74.157]

TASK [iptables : Install persistent multicast script] **********************************************************************
changed: [148.100.74.157]

TASK [iptables : Persist multicast script on Ubuntu with if-up hook] *******************************************************
skipping: [148.100.74.157]

TASK [iptables : Persist multicast script on SLES and RHEL with rc.local] **************************************************
changed: [148.100.74.157]