Made data bag retreival compatible with vagrant, chef solo, and knife solo

[btomasini]

I found I was not able to run this cookbook using vagrant, chef solo, and knife solo for locally stored data bags. This change catches the exception I found was thrown when a data bag was not found in this type of vagrant environment.

[KAllan357]

I'm not sure if this is an exception I'd want to just eat, as it usually means something bad.

I pushed up some changes this morning and released a 3.0.0 version of this cookbook to the Opscode Community site. If you don't mind trying out Nexus 2.7, could you give that a try and see if it works for you?

[btomasini]

That makes sense. I only put in this "wide" catch block since it seemed it matched the other "wide" catch for the http exception - which seemed to me would be thrown with any exception from the chef server.

I am nearly positive I encountered this problem with the 3.0.0 cookbook. I will double check.

[praste]

@KAllan357 and @btomasini
I encountered exact same problem and added exacct same check (I wish I had looked at this issue early on.) Current logic to load databags doesn't seem to work with chef-solo. As noted in issue #85, it looks like cookbook first tries to load databag using environment name '_default' and when no databag item is found while retrieving credentials it throws a exception