Enable build from dist tarball independent of git. This is necessary for downstream builds from source rpm.
Enable build from dist tarball independent of git.
This is necessary for downstream builds from
source rpm.

JIRA: VPP-498

Change-Id: I30ea51a19b153dc35ececbbca79b940fe4e3bc8a
Signed-off-by: Thomas F Herbert <0786393240831fc3b5d6ed63658cfb1f3b1e6c40@redhat.com>

FDio/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,chrisy/vpp,chrisy/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,vpp-dev/vpp