This update fixes the following issues:

prometheus-blackbox_exporter:

- Provide 'prometheus-blackbox_exporter' version 0.19.0 (jsc#SLE-22351)
- Use '%set_permissions' and '%verify_permissions' for SUSE Linux Enterprise 12 (bsc#1191194)
- Set 'CAP_NET_RAW' capability to allow ICMP requests

grafana:

- Add URL to package source code in the login page footer

spacecmd:

- Update translation strings

spacewalk-client-tools:

- Update translation strings

zypp-plugin-spacewalk:

- Use proxy configured in 'up2date' config when it is defined
- Added RHEL8 build.

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