Because it is needed to install psycopg 2.8.2 on ubuntu. Resolves
dependency install failure on unit tests on ubuntu nodes.
Change-Id: I04e9272e351badc1344235571d6f2c9e79fb6223
Closes-Bug: 1828109
Added some local HAHT tests
- unit tests no longer work concurrently
- bindep.txt added for binary dependencies needed for tests
Closes-Bug: 1600019
Partially implements blueprint: high-availability-design
Change-Id: If4213ede7bde4d78d710ce75c0147a4889387da9