added groovy scripts to verify ambergraph vertex retrieval at blueprints...

... and frames layer, and updated JellyTest to use H2 in absence of mysql.

Hi Shaun,

I've incorporated the suggestion of able to verify vertices and amber models from the ambergraph in gremlin groovy shell, and updated JellyTest java unit test to verify the same.  Could you please review this change?

Thanks

Shuang