Unable to install a zVM hosted OCP 4.7.24 on Z Cluster based on new RHCOS 47 RHEL 8.4 based build

Description of problem:
1. When attempting to install a z/VM hosted OCP 4.7.24 on Z cluster, using the 4.7.0-0.nightly-s390x-2021-08-06-180814 build and the accompanying RHCOS 47.84.202108052001-0 build for the bootstrap node, the master/control nodes do not acquire their private network interface and the installation process does not continue, with the OCP cluster installation ultimately failing.

2. The master/control nodes do not acquire their network interface and hostname, with the master/control nodes booted but not network accessible, and with hostname "localhost".

3. For the OCP 4.7.23 on Z build, the corresponding required RHCOS build version is 47.83.202107271611-0, which is built on RHEL 8.3. This consistently installs the OCP 4.7.23 on Z z/VM hosted cluster without issue.

4. For the OCP 4.7.24 on Z build, the corresponding required RHCOS build version is 47.84.202108052001-0, which is built on RHEL 8.4. This consistently fails to install the OCP 4.7.24 on Z z/VM hosted cluster.

5. The OCP 4.7.24 on Z build is the first OCP 4.7.z build that includes an RHCOS 47 build version built on RHEL 8.4.

6. A workaround for this RHCOS 47.84 build install issue is to use the RHCOS 47.83 build 47.83.202107271611-0 for the bootstrap node install, after which all of the master/control nodes and worker/compute nodes will successfully install, including all network configuration. These master/control nodes and worker/compute nodes will successfully install the required RHCOS 47.84.202108052001-0 build as part of the install process.

7. This OCP 4.7.24 on Z installation issue with the introduction of RHCOS 47.84 is very similar to the issue found with the initial introduction of RHCOS 48.84 for OCP 4.8 and as documented in Red Hat OpenShift bugzilla https://bugzilla.redhat.com/show_bug.cgi?id=1950974

Version-Release number of selected component (if applicable):
OCP 4.7.24 (4.7.0-0.nightly-s390x-2021-08-06-180814)

How reproducible:
Consistently reproducible

Steps to Reproduce:
1. Initiate installation of OCP 4.7.24 on Z cluster using the OCP 4.7.0-0.nightly-s390x-2021-08-06-180814 build and the corresponding RHCOS 47.84.202108052001-0 build.

Actual results:
The z/VM hosted OCP 4.7.24 on Z install process will fail as the master/control nodes do not configure their network interfaces.

Expected results:
The z/VM hosted OCP 4.7.24 on Z install process should succeed with the master/control nodes properly configuring their network interfaces.

Additional info:

Thank you.