metal-3 pod stuck in CrashLoopBackOff during cluster installation in RHOCP 4

Issue

• Machine-api co stuck in initialization state during cluster installation

machine-api                                          False       True          True       1h

• metal3-ironic container in metal3 pod stuck in CrashLoopBackOff with below error:

        message: |
          site-packages/oslo_config/cfg.py", line 2157, in __call__
              self._namespace = self._parse_cli_opts(args if args is not None
            File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2928, in _parse_cli_opts
              return self._parse_config_files()
            File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2964, in _parse_config_files
              self._oparser.parse_args(self._args, namespace)
            File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 1940, in parse_args
              return super(_CachedArgumentParser, self).parse_args(args, namespace)
            File "/usr/lib64/python3.9/argparse.py", line 1825, in parse_args
              args, argv = self.parse_known_args(args, namespace)
            File "/usr/lib64/python3.9/argparse.py", line 1858, in parse_known_args
              namespace, args = self._parse_known_args(args, namespace)
            File "/usr/lib64/python3.9/argparse.py", line 2067, in _parse_known_args
              start_index = consume_optional(start_index)
            File "/usr/lib64/python3.9/argparse.py", line 2007, in consume_optional
              take_action(action, args, option_string)
            File "/usr/lib64/python3.9/argparse.py", line 1935, in take_action
              action(self, namespace, argument_values, option_string)
            File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 1377, in __call__
              ConfigParser._parse_file(values, namespace)
            File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 1632, in _parse_file
              raise ConfigFileParseError(pe.filename, str(pe))
          oslo_config.cfg.ConfigFileParseError: Failed to parse /etc/ironic/ironic.conf: at /etc/ironic/ironic.conf:181, No ':' or '=' found in assignment: 'ssh-rsa '