Exercise 2i sort parameter

The default when sort is off is undefined, but this test at least tries
to verify that results are sorted when it's set or defaults to true.
Notice that sort order is not key, but rather <2i term that matched>/key
Fix verify_backup_restore.

First, convert all of the node operations that write/delete to use the
Riak PB connection opened at the start of the test.  When deleting,
ensure we wait for the object to be fully deleted.

Here's where it gets more interesting:

In the original allow_mult=false behaviour, original objects are
replaced with modified objects, and then when performing the restore
operation, the originals are abandoned for the modified objects because
they have a greater timestamp.

In the new allow_mult=true behaviour, original objects are replaced with
modified objects, and then the restore operations restores the original
object as a *sibling*, because the objects have divergent vector clocks.

Adapt the test for this.
Merge pull request #445 from basho/bugfix/csm/verify-backup-restore-siblings

Fix verify_backup_restore.
set allow_mult=false on test bucket to prevent crash in mutator; fix rhc errors
Update verify_dt_converge to cover the HTTP i/f.
Rally to restore whitespace
Merge pull request #451 from basho/feature/sdc/crdt-http-api

Update verify_dt_converge to cover the HTTP i/f.
YZ mapred test needs new search_index bucket prop
Merge pull request #454 from basho/bug/er/yz-to-search-index

YZ mapred test needs new search_index bucket prop
Ensure we re-connect to the proper sink leader.

Ensures that when the same node becomes re-elected, we reconnect to all
clusters that may have been not connected.
Merge pull request #453 from basho/bugfix/csm/race-when-reelection

Ensure we re-connect to the proper sink leader.
do not redirect errors for rtdev-current.sh to /dev/null
only redirect stdout to /dev/null
Add sink verification test.

Verify that if the leader election occurs before the ring has converged,
that we still connect to remote sinks.

This test uses an intercept to ensure we can delay the ring events to
occur until after the election.
Merge pull request #467 from basho/feature/csm/verify-sink-connections-2.0

Add sink verification test.
Add CRDT ops to pb_security. See also riak_kv#669
Add CRDT requests to http_security.
Merge pull request #468 from basho/feature/sdc/crdt-security

Add CRDT requests/permissions to security tests
Merge pull request #464 from basho/ajs-rtdev-current-no-dev-null

do not redirect errors for rtdev-current.sh to /dev/null
Merge pull request #444 from basho/feature/2i-sort-optional

Exercise 2i sort parameter