Make intercepts wait on the node-up before rpc:call's

Intercepts get called whether they are used or not in every test.
In all cases of calling 'riak start' intercepts are loaded
before waiting on the node to be confirmed up which causes
rpc failures.
Removing lager output b/c wait_until already outputs
Merge pull request #158 from basho/jem-intercepts-now-with-patience

Make intercepts wait on the node-up before rpc:call's