Small fix for vppctl

Change-Id: I5d2668b3487d240e7d8c8a257e9a5607e2b314ec
Signed-off-by: Ed Warnicke <eaw@cisco.com>

vpp-api-test/scripts/vppctl

@@ -1,13 +1,14 @@
 #!/bin/bash
 if [ $# -gt 0 ]; then
-    echo exec ${@} | vpp_api_test | sed 's/vat# //g'
+    echo exec ${@} | vpe_api_test | sed 's/vat# //g'
 else
     echo -n "vpp# "
     while read CMD; do
-	if [ $CMD == "exit" ]; then
-	    exit
-	fi
-	echo exec $CMD | vpp_api_test | sed 's/vat# //g'
-	echo -n "vpp# "
+        if [ "x$CMD" == "xexit" ]; then
+            exit
+        elif [ "x$CMD" != "x" ]; then
+            echo exec $CMD | vpe_api_test | sed 's/vat# //g'
+        fi
+        echo -n "vpp# "
     done
 fi