Add common directory to BasicSyncAdapter sample

This directory will be automatically copied over using a
templating system in the future, but for now it needs to
be copied in using sdk.atree.

This also allows us to remove the symlink that was checked
in previously, and which likely won't work on Windows.

Change-Id: If3d78eec7c1b845d1ae1caca59099d3284bdf73a
1 file changed