Patch in:
commit 6f425af08f02ed6c6bf676c25864ed0f0d3554ad
Author: Megh Bhatt <meghb@juniper.net>
Date:   Tue Jan 21 14:11:39 2014 -0800

    1. Allow generators to not start HTTP introspect by passing
       -1 as HTTP port in init_generator pysandesh
    2. Add UveInterVnStats, InterVnStats, virutalmachine_list to
       UveVirtualNetworkAgentTrace message in mock generator
    3. Allow user to specify number of instances per generator
       and number of virtual networks
Logger name should be the generator id (source, module, node type,
instance id) rather than just the module
Merge pull request #18 from Juniper/meghb_mock_1

Logger name should be the generator id