Security update for libzypp

The Software Update Stack was updated to receive fixes and enhancements.

libzypp:

- CVE-2017-7435, CVE-2017-7436, CVE-2017-9269: Fix GPG check workflows, mainly for unsigned
repositories and packages. (bsc#1045735, bsc#1038984)
- Fix gpg-pubkey release (creation time) computation. (bsc#1036659)
- Update lsof blacklist. (bsc#1046417)
- Re-probe on refresh if the repository type changes. (bsc#1048315)
- Propagate proper error code to DownloadProgressReport. (bsc#1047785)
- Allow to trigger an appdata refresh unconditionally. (bsc#1009745)
- Support custom repo variables defined in /etc/zypp/vars.d.

yast2-pkg-bindings:

- Do not crash when the repository URL is not defined. (bsc#1043218)

This update was imported from the SUSE:SLE-12-SP3:Update update project.

Fixed bugs
bnc#1043218
YaST crashes on installation of banshee
bnc#1047785
zypper reports an error to the user during repository refresh
bnc#1038984
VUL-0: CVE-2017-7435, CVE-2017-7436: libzypp: rpm-md repository security downgrade
bnc#1046417
zypper ps always report deleted files, even after reboot
bnc#1045735
VUL-0: CVE-2017-9269: libzypp: Missing key pinning allows mirrors to exchange content undetected
bnc#1048315
Zypp fails to re-probe if the repository type changes (susetags<>repomd)
bnc#1036659
PackageKit deletes KDE:Extra repo gpg key
bnc#1009745
No Appstream data installed after installation
Selected Binaries
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