[CentOS] Stuck Centos 7 to 8 upgrade

Sat May 16 17:39:02 UTC 2020
Frank M. Ramaekers Jr. <frank at ramaekers.com>

Four problems below:

# dnf -y groupupdate "Core" "Minimal Install"
bintray-tvheadend-stable 0.0  B/s |   0  B     00:00
Failed to synchronize cache for repo 'bintray-tvheadend-stable', 
ignoring this repo.
Last metadata expiration check: 0:03:11 ago on Sat 16 May 2020 12:30:47 
PM CDT.
Error:
  Problem 1: package python3-hawkey-0.35.1-9.el8_1.x86_64 requires 
librpm.so.8()(64bit), but none of the providers can be installed
   - package python3-hawkey-0.35.1-9.el8_1.x86_64 requires 
librpmio.so.8()(64bit), but none of the providers can be installed
   - package python3-dnf-plugins-core-4.0.8-3.el8.noarch requires 
python3-hawkey >= 0.34.0, but none of the providers can be installed
   - cannot install both rpm-libs-4.14.2-26.el8_1.x86_64 and 
rpm-libs-4.11.3-43.el7.x86_64
   - package dnf-plugins-core-4.0.8-3.el8.noarch requires 
python3-dnf-plugins-core = 4.0.8-3.el8, but none of the providers can be 
installed
   - package deltarpm-3.6-3.el7.x86_64 requires librpm.so.3()(64bit), 
but none of the providers can be installed
   - package deltarpm-3.6-3.el7.x86_64 requires librpmio.so.3()(64bit), 
but none of the providers can be installed
   - conflicting requests
   - problem with installed package deltarpm-3.6-3.el7.x86_64
  Problem 2: package 
python3-rhn-client-tools-2.8.16-13.module_el8.1.0+211+ad6c0bc7.x86_64 
requires libgudev, but none of the providers can be installed
   - package 
python3-dnf-plugin-spacewalk-2.8.5-11.module_el8.1.0+211+ad6c0bc7.noarch 
requires python3-rhn-client-tools >= 2.8.4, but none of the providers 
can be installed
   - package libgudev-232-4.el8.i686 obsoletes libgudev1 < 230 provided 
by libgudev1-219-73.el7_8.6.x86_64
   - package libgudev-232-4.el8.x86_64 obsoletes libgudev1 < 230 
provided by libgudev1-219-73.el7_8.6.x86_64
   - package 
dnf-plugin-spacewalk-2.8.5-11.module_el8.1.0+211+ad6c0bc7.noarch 
requires python3-dnf-plugin-spacewalk = 
2.8.5-11.module_el8.1.0+211+ad6c0bc7, but none of the providers can be 
installed
   - package libgudev1-devel-219-73.el7_8.6.x86_64 requires libgudev1 = 
219-73.el7_8.6, but none of the providers can be installed
   - conflicting requests
   - problem with installed package libgudev1-devel-219-73.el7_8.6.x86_64
  Problem 3: package python3-dnf-4.2.7-7.el8_1.noarch requires dnf-data 
= 4.2.7-7.el8_1, but none of the providers can be installed
   - package dnf-4.2.7-7.el8_1.noarch requires python3-dnf = 
4.2.7-7.el8_1, but none of the providers can be installed
   - cannot install both dnf-data-4.2.7-7.el8_1.noarch and 
dnf-data-4.0.9.2-1.el7_6.noarch
   - package yum-4.2.7-7.el8_1.noarch requires dnf = 4.2.7-7.el8_1, but 
none of the providers can be installed
   - package python2-dnf-4.0.9.2-1.el7_6.noarch requires dnf-data = 
4.0.9.2-1.el7_6, but none of the providers can be installed
   - conflicting requests
   - problem with installed package python2-dnf-4.0.9.2-1.el7_6.noarch
  Problem 4: problem with installed package 
ipa-client-4.6.6-11.el7.centos.x86_64
   - package ipa-client-4.6.6-11.el7.centos.x86_64 requires 
libcollection.so.2()(64bit), but none of the providers can be installed
   - package ipa-client-4.8.0-10.module_el8.1.0+255+aa2bdb39.x86_64 
requires libxmlrpc_util.so.4()(64bit), but none of the providers can be 
installed
   - cannot install both libcollection-0.7.0-39.el8.x86_64 and 
libcollection-0.7.0-32.el7.x86_64
   - cannot install both xmlrpc-c-1.51.0-5.el8.x86_64 and 
xmlrpc-c-1.32.5-1905.svn2451.el7.x86_64
   - package sssd-kcm-2.2.0-19.el8_1.1.x86_64 requires 
libcollection.so.4()(64bit), but none of the providers can be installed
   - package libreport-plugin-mantisbt-2.1.11-53.el7.centos.x86_64 
requires libxmlrpc_util.so.3()(64bit), but none of the providers can be 
installed
   - conflicting requests
   - problem with installed package 
libreport-plugin-mantisbt-2.1.11-53.el7.centos.x86_64
   - package ipa-client-4.8.0-11.module_el8.1.0+253+3b90c921.x86_64 is 
excluded
   - package ipa-client-4.8.0-13.module_el8.1.0+265+e1e65be4.x86_64 is 
excluded
(try to add '--allowerasing' to command line to replace conflicting 
packages or '--skip-broken' to skip uninstallable packages)

Ideas?
-Frank