Add default_orgname tests


 -- Added "default_orgname" support

In "layouts" key, add

````"default_orgname": "deforg"````

Pedant tests are modified to run both pedant in normal mode, and if ````default_orgname```` is set, to run pedant with ````--use-default-org````
@hosh encountered a situation that even though he was running a standalone topo config the drbd recipe was executing. Very strange.  I'm hoping the commit I made in master mysteriously takes care of it.