build/tar/postinstall.tail: add /etc/pcp/labels/optional
build/tar/postinstall.tail: add /etc/pcp/labels/optional

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp