Fix rpm packaging bit-rot

Change-Id: Ia710b0773984891ee18c6c0558cc09b984043e38
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/build-root/rpm/vpp.spec b/build-root/rpm/vpp.spec
index fbadf07..85b1286 100644
--- a/build-root/rpm/vpp.spec
+++ b/build-root/rpm/vpp.spec
@@ -113,6 +113,7 @@
 %{_unitdir}/vpp.service
 /usr/bin/vpp*
 /usr/bin/svm*
+/usr/bin/elftool
 %config /etc/sysctl.d/80-vpp.conf
 %config /etc/vpp/startup.conf