Upgrade to ADAM 0.10.1-SNAPSHOT stream

Upgrades avocado to build on the ADAM 0.10.1-SNAPSHOT stream. Additionally, this makes a few other changes:

* Upgrades assembler to emit genotypes with the new multi-allelic genotype format.
* Fixes issue #36 by emitting genotypes instead of variants.
* Removes the strand bias filter, due to change in the ADAM genotype schema, which will require updates to the strand bias filter.