ACCUMULO-3101 Increase timeout for some of ExamplesIT tests on multinode

Signed-off-by: Josh Elser <elserj@apache.org>
Merge branch '1.6.1-SNAPSHOT'
ACCUMULO-1957 per-table durability settings
ACCUMULO-1957 whitespace
ACCUMULO-1957 updated with [~elserj]s review
ACCUMULO-1957 implement per-session Durability
ACCUMULO-1957 more updates based on review comments
ACCUMULO-1957 test cleanup
ACCUMULO-1957 test/whitespace cleanup
ACCUMULO-1957 add durabilty to the simple Read/Write example
ACCUMULO-1957 rat checks, whitespace, removed debugging log statements
ACCUMULO-1957 added Durability options to the Proxy and Shell, swap test and proxy module dependencies
ACCUMULO-1957 backed out changes I didn't mean to commit, added a test of the durability option for InsertCommand