Cherry-pick "Merge branch 'UUIDFixes-1.0-20200923' into '1.0'" into master

UUID Fixes, 1.0 branch (2020.09.23.)

See merge request !734 (merged)

(cherry picked from commit 16c8980a)

• f96ecdd8 Made FindUUID.cmake set up the correct LCG RPM dependency.
• c8716377 Taught yampl how to pick up uuid from the LCG release for its build.