Update prior to schema changes

This release should represent the last prod release using the older schemas prior to the schema expansion for the annotation-service.

Remove use of go-bindata for etl schema descriptions (#968) …
Create go.mod and move appengine/queue_pusher to a dedicated repository (#969)
Get rid of the extra double-quotes in JSON string values (#971)
Prepare for cloudbuild migration 1 of 2 (#972)
Complete etl deployment migration to cloudbuild.yaml 2 of 2 (#973)
Start parsing ".json" files (#976)
Improve package test function names (#975)
remove etl-schema submodule (#979)
Sandbox opt gomod (#980)
Adjust K8S parsers to use 15 cpus (#981)
Sandbox dead code (#977)
Add support for retired sites' annotations (#982)
Add sidestream to BQ update-schema (#987)
Add NDTWeb100 struct to mirror current BQ schema (#988)