PR rocky: use /opt/yaml-cpp and /opt/libswoc (#330)

Now that yaml-cpp and libswoc are installed in /opt in the rocky images,
use those install dirs instead of building each of these for each build.
1 file changed
tree: 94f5e691370e4a523b0a6fbf13a94c61dddffd54
  1. abi/
  2. bin/
  3. docker/
  4. jenkins/
  5. README.md
README.md

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