[Cassandra] Change: test connection query#1474

Merged

arikfr merged 2 commits intogetredash:masterfrom

yershalom:master

Dec 20, 2016

Commits on Dec 19, 2016

Changed exception type to ReadTimeout and added test query for test connection
syerushalmy
committed

Commits on Dec 20, 2016

Removed ReadTimeout exception
syerushalmy
committed