created FlowProgrammer module and implemented FlowPusher and FlowSynchronizer as services, also modified FlowManager to use the service exported by FlowProgrammer
diff --git a/src/main/resources/META-INF/services/net.floodlightcontroller.core.module.IFloodlightModule b/src/main/resources/META-INF/services/net.floodlightcontroller.core.module.IFloodlightModule
index 7c4bc1a..22c348a 100644
--- a/src/main/resources/META-INF/services/net.floodlightcontroller.core.module.IFloodlightModule
+++ b/src/main/resources/META-INF/services/net.floodlightcontroller.core.module.IFloodlightModule
@@ -20,6 +20,7 @@
net.floodlightcontroller.core.test.MockThreadPoolService
net.onrc.onos.datagrid.HazelcastDatagrid
net.onrc.onos.ofcontroller.flowmanager.FlowManager
+net.onrc.onos.ofcontroller.flowprogrammer.FlowProgrammer
net.onrc.onos.ofcontroller.topology.TopologyManager
net.onrc.onos.ofcontroller.bgproute.BgpRoute
net.onrc.onos.registry.controller.ZookeeperRegistry