make test-ext: a new test target that builds VOM (existing one no longer do)

Change-Id: If590e90b2a1c3b884863ec15a92ea4353ac9eb7c
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/test/Makefile b/test/Makefile
index 2c5f1ec..0659642 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -143,7 +143,10 @@
 
 test-dep: verify-python-path $(PAPI_INSTALL_DONE)
 
-test: verify-python-path $(PAPI_INSTALL_DONE) ext sanity reset
+test: verify-python-path $(PAPI_INSTALL_DONE) sanity reset
+	$(call retest-func)
+
+test-ext: verify-python-path $(PAPI_INSTALL_DONE) ext sanity reset
 	$(call retest-func)
 
 retest: verify-python-path sanity reset