Recommended update for pidentd

This update for pidentd fixes the following issues:

- IPv6 support was accidentally dropped when upgrading to 3.0.19. This update reenables IPv6 support. (bsc#1101600)
- Drop uname -r of buildhost from binary for reproducible builds (bsc#1101107)

This update was imported from the SUSE:SLE-15:Update update project.

Fixed bugs
Partner-L3: [HPS Bug] Identd unable to listen on IPv6 with the SLES15 pidentd rpm
trackerbug: packages do not build reproducibly from including kernel version
Selected Binaries
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