Fix name. Use existing directory check.

tests/gen_test_vbpubks.sh

Index: tests/gen_test_vbpubks.sh
diff --git a/tests/gen_test_vpubks.sh b/tests/gen_test_vbpubks.sh
similarity index 84%
rename from tests/gen_test_vpubks.sh
rename to tests/gen_test_vbpubks.sh
index 7f9cf9a2b69d00b3628b8402f18a9cab96a436b1..995a48b9b2ca8f5c33e6bb1a600e7471e592120f 100755
--- a/tests/gen_test_vpubks.sh
+++ b/tests/gen_test_vbpubks.sh
@@ -25,11 +25,5 @@ function generate_vpubks {
   done
 }
 
-
-if [ ! -d ${TESTKEY_DIR} ]; then
-  echo "Test Key Directory does not exist!"
-  echo "You must run gen_test_keys.sh first."
-  exit 1
-fi
-
+check_test_keys
 generate_vpubks