fix for partitioner to allow reading of files with binary 0/1
Merge branch 'u/salnikov/DM-664'
DM-1152 - zookeeper connection - proper/robust implementation

It is a combination of 4 commits.
See branch u/jbecla/DM-1152 for full details
Merge branch 'u/jbecla/DM-1152'
Moving test code to qserv_testdata repository
Removing testdata_dir management from administration scritps
python package lsst.qserv is both distributed in qserv and qserv_testdata