rdma-core spec weird behavior on Fedora

[Leon Romanovsky <leon@kernel.org>]

Hi Honggang,

Your commit b02de521022a ("redhat: Remove base package dependency from all sub-packages")
removes protection from rdma-core when user performs "dnf autoremove".

Before your patch, systemd was dependent on libibverbs and latter
required rdma-core. After your patch, the last link is lost and
rdma-core marked as orphaned package.

Any attempt to install rdma-core as standalone package will have the
following errors, due to the library dependency of udevadm.
[leonro@c rdma-core]$ ldd /sbin/udevadm | grep verbs
	libibverbs.so.1 => not found

[leonro@c rdma-core]$ sudo dnf install /tmp/rdma-core/RPMS/x86_64/rdma-core-34.0-1.fc32.x86_64.rpm
Last metadata expiration check: 1:29:40 ago on Sun 07 Feb 2021 07:29:13 AM IST.
Dependencies resolved.
======================================================================================================================
 Package                    Architecture            Version                       Repository                     Size
======================================================================================================================
Installing:
 rdma-core                  x86_64                  34.0-1.fc32                   @commandline                   54 k

Transaction Summary
======================================================================================================================
Install  1 Package

Total size: 54 k
Installed size: 121 k
Is this ok [y/N]: y
Downloading Packages:
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                                                        1/1
  Installing       : rdma-core-34.0-1.fc32.x86_64                                                           1/1
  Running scriptlet: rdma-core-34.0-1.fc32.x86_64                                                           1/1
/sbin/udevadm: error while loading shared libraries: libibverbs.so.1: cannot open shared object file: No such file or directory
/sbin/udevadm: error while loading shared libraries: libibverbs.so.1: cannot open shared object file: No such file or directory
/sbin/udevadm: error while loading shared libraries: libibverbs.so.1: cannot open shared object file: No such file or directory

/usr/bin/udevadm: error while loading shared libraries: libibverbs.so.1: cannot open shared object file: No such file or directory

/usr/bin/systemctl: error while loading shared libraries: libibverbs.so.1: cannot open shared object file: No such file or directory
warning: %triggerin(systemd-245.8-2.fc32.x86_64) scriptlet failed, exit status 127

Error in <unknown> scriptlet in rpm package rdma-core
  Verifying        : rdma-core-34.0-1.fc32.x86_64                                                           1/1

Installed:
  rdma-core-34.0-1.fc32.x86_64

Complete!

--------------------------------------------------------------------------------------
I think that the right solution is to make rdma-core meta-package as we
wanted it from the beginning when created rdma-core repo.

Thanks