(QENG-1906) Refactor initialize to allow config passing

Prior to this commit, several pieces of vmpooler performed configuration
and initialization steps within 'initialize'. This made it difficult to
pass in mock objects for testing purposes.

This commit performs a single configuration and passes the results to
the various pieces of vmpooler.

vmpooler

@@ -5,10 +5,27 @@ $LOAD_PATH.unshift(File.dirname(__FILE__))
 require 'rubygems' unless defined?(Gem)
 require 'lib/vmpooler'
 
-Thread.new { Vmpooler::API.new.execute! }
-Thread.new { Vmpooler::Janitor.new.execute! }
-Thread.new { Vmpooler::PoolManager.new.execute! }
+config = Vmpooler.config
+redis_host = config[:redis]['server']
+redis_ttl = config[:redis]['data_ttl']
+logger_file = config[:config]['logfile']
+graphite = defined? config[:graphite]['server'] ? config[:graphite]['server'] : nil
+
+api = Thread.new {
+        thr = Vmpooler::API.new
+        thr.helpers.configure(config, Vmpooler.new_redis(redis_host))
+        thr.helpers.execute!
+      }
+janitor = Thread.new {
+            Vmpooler::Janitor.new(Vmpooler.new_logger(logger_file), Vmpooler.new_redis(redis_host), redis_ttl).execute!
+          }
+manager = Thread.new {
+            Vmpooler::PoolManager.new(config,
+                                      config[:pools],
+                                      Vmpooler.new_logger(logger_file),
+                                      Vmpooler.new_redis(redis_host),
+                                      Vmpooler.new_graphite(graphite)).execute!
+          }
+
+[api, janitor, manager].each { |t| t.join }
 
-loop do
-  sleep(10)
-end