Cloudant Spark connector v1.6.2

Contains fixes for tickets:

BugzID: 53022 - Register cloudant-spark with Spark Packages community index
BugzId: 61792 - Message for saving data with 0 records
BugzId: 60775 - Remove all providers accept DefaultSource
BugzId: 59451- Cache documents retrieved for schema when schemaSampleSize = -1
BugzId: 60785 - Adding connector version

BugzId: 60495 - Loading data from views
BugzId: 59902 - Make a protocol http or https configurable
BugzId: 60263 - Increase timeouts in order to be able to load big dbs into Spark

Based on release v1.6.1