This OBS toolchain update fixes the following issues:

Package 'build':

- CVE-2010-4226: force use of bsdtar for VMs (bnc#665768)
- CVE-2017-14804: Improve file name check extractbuild (bsc#1069904)
- switch baselibs scheme for debuginfo packages from foo-debuginfo-32bit to foo-32bit-debuginfo (fate#323217)

Package 'obs-service-source_validator':
- CVE-2017-9274: Don't use rpmbuild to extract sources, patches etc. from a spec (bnc#938556).
- Update to version 0.7
- use spec_query instead of output_versions using the specfile parser from the build package (boo#1059858)

Package 'osc':
- update to version 0.162.0
- add Recommends: ca-certificates to enable TLS verification without manually installing them. (bnc#1061500)

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