pcp updates - fix containers build error

"Mark Goodwin" <[email protected]> Sat, 11 Feb 2017 16:20:09 +1100
Newsgroups gmane.comp.sysutils.pcp
Message-ID <[email protected]>
Changes committed to git://git.pcp.io/mgoodwin/pcp master

commit 7204e68b0de8f0bb8be8c4a8ad93acf4e11c2856
Author: Mark Goodwin <[email protected]>
Date:   Sat Feb 11 16:13:33 2017 +1100

    Fix containers/pcp-base build error

    The RPMS directory needs to be created before we can populate it