hs-test: fix wait for app after ldp change

After gerrit 38370 (729b9c94), apps are registered via ldp using program
name. Update tests to support that.

Also add make file help for UNCONFIGURE.

Type: test

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I4ad50abfd175664b47b358df1a72e0758f51190d
diff --git a/extras/hs-test/http_test.go b/extras/hs-test/http_test.go
index c1b3b7f..3f1d303 100644
--- a/extras/hs-test/http_test.go
+++ b/extras/hs-test/http_test.go
@@ -48,7 +48,7 @@
 	s.assertNil(nginxCont.run())
 
 	vpp := s.getContainerByName("vpp").vppInstance
-	vpp.waitForApp("-app", 5)
+	vpp.waitForApp("nginx-", 5)
 
 	serverAddress := s.netInterfaces[tapInterfaceName].Peer().IP4AddressString()
 
@@ -85,7 +85,7 @@
 
 	nginxCont := s.getContainerByName("nginx")
 	s.assertNil(nginxCont.run())
-	vpp.waitForApp("-app", 5)
+	vpp.waitForApp("nginx-", 5)
 
 	cmd := exec.Command(exeName, args...)
 	s.log(cmd)