From downstream bug RHEL-116757, the use of ss to map all the
usage of ports to pids and process names under selinux is rather
limited by the mysqld_exec_t limitations.
The checking of the mapping is a bit excessive in a selinux
environment where binding is limited.
We replace the use of ss under selinux to raw reading of the
/proc/tcp{,} interfaces of the linux that aren't selinux restricted.
5a8cd03f0f