Ensure gpg commands inside mariner-repos.spec are run during image creation

[mrgirgin]

Summary

Ensure the gpg commands in the %post section of mariner-repos.spec will be run during image creation.

Change Log

• Added 'gpg' and its dependencies inside the chroot
• Added tdnf-plugin-repogpgcheck to chroot to enable metadata gpgcheck inside the chroot.
• Added pinentry to the toolchain, as it is a runtime dependency by gpg.
• Fixed a bug in safechroot that sets the home directory for root user to /home/root instead of /root.
• Added stopGPGAgent to be run at chroot termination as gpg-agent was holding locks inside the chroot and preventing the unmount operations.

Does this affect the toolchain?

YES

Merge Checklist

• The toolchain has been rebuilt successfully if any changes were made to it
• The toolchain/worker package manifests have been updated if this is a toolchain package
• Updated packages have been successfully built
• New source files have updated hashes in the *.signatures.json files
• Documentation has been updated to match any changes to the build system
• Ready to merge

[christopherco]

[jslobodzian]