Leapp preupgrade on Red Hat Satellite server fails with error Failed to execute script to apply transaction workaround remove obsolete RPM GPG keys from RPM DB

Issue

• Leapp preupgrade on Red Hat Satellite server fails with below error.

  [ERROR] Actor: dnf_transaction_check
  Message: Failed to execute script to apply transaction workaround remove obsolete RPM GPG keys from RPM DB. Message: Command ['systemd-nspawn', '--register=no', '--quiet', '-D', u'/var/lib/leapp/scratch/mounts/root_/system_overlay', '--setenv=LEAPP_UPGRADE_PATH_TARGET_RELEASE=8.8', '--setenv=LEAPP_NO_RHSM=0', '--setenv=LEAPP_EXPERIMENTAL=0', '--setenv=LEAPP_UPGRADE_PATH_FLAVOUR=default', '--setenv=LEAPP_COMMON_TOOLS=:/etc/leapp/repos.d/system_upgrade/common/tools:/etc/leapp/repos.d/system_upgrade/el7toel8/tools', '--setenv=LEAPP_COMMON_FILES=:/etc/leapp/repos.d/system_upgrade/common/files:/etc/leapp/repos.d/system_upgrade/el7toel8/files', '--setenv=LEAPP_IPU_IN_PROGRESS=7to8', '--setenv=LEAPP_UNSUPPORTED=0', '--setenv=LEAPP_EXECUTION_ID=8017fcd9-57a2-4d41-9a53-3c46f8e43890', '--setenv=LEAP_HOSTNAME=satellite.example.com', '/bin/bash', '-c', '/etc/leapp/repos.d/system_upgrade/common/tools/removerpmgpgkeys gpg-pubkey-2fa658e0-45700c69'] failed with exit code 1