Change to pattern used in raet for importing version information to avoid missing importlib on python26

@SmithSamuelM The issue I asked about re:the missing importlib library in RAET turned out to be in ioflo instead of RAET. Ioflo was importing itself during setup, but was trying to 'import importlib' as well.  Importlib doesn't exist in the default python 2.6 distro. This is why we didn't see this all the time--on CentOS 7/Ubuntu/any distro with Py 2.7 it was a non-issue.  I just changed the way Ioflo gets it's metadata to match the way RAET does it.  Tested on Cent6.5 and Ubuntu 14.04 successfully.