[REEF-2009] Replace Version tag with VersionPrefix and VersionSuffix
[REEF-2009] Replace Version tag with VersionPrefix and VersionSuffix

This changes the Version tag in the props file to now be specified with
VersionPrefix and VersionSuffix. VersionPrefix is now the main version
of REEF while VersionSuffix is the SNAPSHOT information if set as a
SNAPSHOT build.

JIRA:
  [REEF-2009](https://issues.apache.org/jira/browse/REEF-2009)

Pull Request:
  This closes #1449

apache/incubator-reef,motus/reef,dongjoon-hyun/incubator-reef,apache/reef,apache/incubator-reef,dougmsft/reef,apache/reef,markusweimer/reef,apache/reef,singlis/reef,dougmsft/reef,singlis/reef,motus/reef,singlis/reef,markusweimer/incubator-reef,singlis/reef,dougmsft/reef,markusweimer/incubator-reef,markusweimer/reef,markusweimer/reef,dongjoon-hyun/incubator-reef,dongjoon-hyun/incubator-reef,markusweimer/reef,motus/reef,dongjoon-hyun/incubator-reef,motus/reef,apache/reef,apache/reef,singlis/reef,apache/incubator-reef,dougmsft/reef,dougmsft/reef,markusweimer/reef,apache/incubator-reef,apache/reef,dongjoon-hyun/reef,dongjoon-hyun/reef,motus/reef,motus/reef,markusweimer/reef,apache/reef,dongjoon-hyun/incubator-reef,markusweimer/incubator-reef,dougmsft/reef,dongjoon-hyun/reef,markusweimer/reef,dongjoon-hyun/reef,singlis/reef,dongjoon-hyun/incubator-reef,dougmsft/reef,motus/reef,markusweimer/incubator-reef,dongjoon-hyun/reef,markusweimer/incubator-reef,apache/incubator-reef,apache/incubator-reef,singlis/reef,dongjoon-hyun/reef,markusweimer/incubator-reef,dongjoon-hyun/incubator-reef,apache/incubator-reef,dongjoon-hyun/reef,markusweimer/incubator-reef