Azure URIs and GenomicsDB about gatk

[lbergelson]

1. @nalinigans It's a very reasonable question. It's true, the --avoid-nio flag is technically redundant. You can recreate it with a combination of other flags. I added it because
   a) I didn't realize that was the when I started adding it.
   b) The combination of flags was kind of complicated so it was helpful to have something that gave you clear instructions about what you needed to enable.

I think we could merge them, although I think there is one sanity check we do even when -bypass-feature-reader is turned on, that we need to turn off. I basically added "something that works for Megan's project right now."

2. Yes, the various cases were getting complicated and I had a bug when -V was enabled so I just disabled it as an option. It would make sense to add -V support for azure files. I just didn't do it because I was in a rush and I figured it was better to disable it than to have it potentially be wrong.

3. Yeah, that's the error I saw. It's definitely better than nothing. It would be great if it could be propagated back up to the java layer as a Java exception though. It currently ends the program with SIGABORT I think which doesn't play that nicely with various reporting and retry mechanisms. No super high priority, but nice if you have the cycles.