* Refactored cron job from shell script to go.
* Included metadata to the projects.txt for envoy
* Included checks for duplicate item in projects.txt
* Sorted the projects.txt so that it is easier for someone to look for a
project
Fixed the results.json to be wellformed from the cron job.
Changed the docker image from gsutil to cloudsdk:slim to `sed` binary
which is being used with the cron.sh