Modify glob expression

- to make it watchman friendly

Change-Id: I4b9486a65f6d9da63ecd32e96ccd3bd074be5a4c
diff --git a/web/gui2/BUCK b/web/gui2/BUCK
index 98dff4e..1d3c25d 100644
--- a/web/gui2/BUCK
+++ b/web/gui2/BUCK
@@ -33,7 +33,7 @@
 genrule(
     name = 'onos-web-gui2-build',
     srcs = glob([
-            './**/*.json',
+            '**/*.json',
             'src/main/webapp/**/*.ts',
             'src/main/webapp/**/*.html',
             'src/main/webapp/**/*.css',