Fix happybase version

Since version 0.7 happybase contains a bug https://github.com/wbolster/happybase/issues/54
It makes impossible HBase table scanning with filters. Version 0.6 works ok in this scenario.

Change-Id: I33bad6447f6bc1241f3168a3df14e6f5bf028f5b
Merge "Fix happybase version"