Transform endpoint analysis/variants/sample/query into an Analysis

[j-coll]

This operation was build in #536. It finds, given a set of variants, the list of samples that have any or all mutations from the list.

This method may take a long time to compute if the list of variants or samples is large. Also, limiting these parameters could make the method not useful.

Therefore, we should transform this method into an asynchronous analysis.

Tasks

• Rename endpoint GET analysis/variant/sample/query to POST analysis/variant/sample/run
• Implement the functionality into an analysis of the OpenCGA Tool Framework
• Implement one default ToolRunner iterating directly the list of variants
• Implement an specific ToolRunner for HBase