Update ccsdk-oran not to use version plugin

Update ccsdk-oran not to use version plugin

Update ccsdk-oran not to use version plugin for staging builds. Instead,
the string '-SNAPSHOT' will be globally removed from snapshot builds.
This technique allows us to make sure that merge builds will use
snapshot version of CCSDK dependencies while staging builds will
use released version only.  One side effect is that staging
builds will fail until parent pom is released - which is why
we don't run daily staging builds, but only staging builds on
demand.

Change-Id: Ib43b7c9585c32fcd82830641ff602e4f4010a923
Issue-ID: CCSDK-2742
Signed-off-by: Dan Timoney <dtimoney@att.com>