Initialize all the main msg fields we plan to use.
Initialize all the main msg fields we plan to use.

kparlante/data-pipeline,mozilla-services/data-pipeline,whd/data-pipeline,acmiyaguchi/data-pipeline,whd/data-pipeline,kparlante/data-pipeline,kparlante/data-pipeline,sapohl/data-pipeline,mozilla-services/data-pipeline,mreid-moz/data-pipeline,sapohl/data-pipeline,sapohl/data-pipeline,nathwill/data-pipeline,acmiyaguchi/data-pipeline,nathwill/data-pipeline,whd/data-pipeline,nathwill/data-pipeline,mreid-moz/data-pipeline,mozilla-services/data-pipeline,mreid-moz/data-pipeline,acmiyaguchi/data-pipeline,nathwill/data-pipeline,sapohl/data-pipeline,mozilla-services/data-pipeline,whd/data-pipeline,kparlante/data-pipeline,acmiyaguchi/data-pipeline