Optional update for ldb

This update for ldb addresses issues that a visible

- Spec file directives related to python-talloc-devel caused build failures (bsc#1108164)
- The package license should have been LGPL 3.0 (bsc#1109571)

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

Fixed bugs
bnc#1108164
talloc update breaks ldb and tevent build
bnc#1109571
RPM libtdb1 should be LGPLv3
Selected Binaries
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