ACCUMULO-3064 Allow useSslForIT to always be specified.

Previously, the configuration would only be set when the
shared-mini-for-it profile was activated. There's no reason
this has to be the case -- the normal MAC setup can create and
use SSL for RPCs.
Merge branch '1.6.1-SNAPSHOT'
ACCUMULO-3048 Bump up maven-release-plugin to work around bug in git scm provider
ACCUMULO-3048 Use localCheckout for release plugin
Merge branch '1.5.2-SNAPSHOT' into 1.6.1-SNAPSHOT
Merge branch '1.6.1-SNAPSHOT'