Drop scap-1, scap-2, & sync-common scripts; up version to 2.8-1

This change removes scap-1, scap-2, and sync-common scripts so they can be
managed directly in operations/puppet. The corresponding Gerrit change to add
them to that repository is I33d93347f. The rationale is documented there.

Change-Id: I047f37b0a120710e68b9dc15c98a1e6057cca788