Add cassandra driver implementation with custom lsi support

In this patch added:
 1) java library with custom LSI implementation
 2) new storage driver for working with custom LSI
 3) storage tests for this driver
 4) fixes for our gate jobs - deployment of new java library with
    Cassandra instalation


Implements: bp cassandra-backend-implementation-redesign
Change-Id: I52c6856e5e67cab5ec29f6fcdc0186ab45629327
Merge "Add cassandra driver implementation with custom lsi support"