Improvements to Bazel workspace generator

- Format generatated workspace file to match bazel build file style guidelines
- Automatically generate bazel and buck versions from onos-lib-gen

Change-Id: Iaa879e4e6356e42382b0c9ba82d7ae82e87dac9a
diff --git a/lib/BUCK b/lib/BUCK
index 5de40a3..fb7c2e9 100644
--- a/lib/BUCK
+++ b/lib/BUCK
@@ -1,4 +1,4 @@
-# ***** This file was auto-generated at Wed, 30 May 2018 22:37:13 GMT. Do not edit this file manually. *****
+# ***** This file was auto-generated at Thu, 31 May 2018 16:26:40 GMT. Do not edit this file manually. *****
 # ***** Use onos-lib-gen *****
 
 pass_thru_pom(