uname -i/-p not working on Fedora any more

[hhorak]

uname -i functionality is non-portable and the custom patch Fedora was carrying around was recently dropped:

https://src.fedoraproject.org/rpms/coreutils/c/cd953e11dd78cada371f0389171cea671949141b?branch=rawhide

The rhbz#548834 suggests to use uname -m instead.

Also relevant discussion happens at rhbz#2158752

PostgreSQL container uses uname -i and uname -p:

• https://github.com/sclorg/postgresql-container/blob/3525b011dd8e44e081cdfb7b55aa12719eeae5b7/src/root/usr/share/container-scripts/postgresql/common.sh#L134
• https://github.com/sclorg/postgresql-container/blob/8aafd89c841475de05219bd60ee14a55ee20af5d/test/run_test#L649