Implement CI/CD

[BrianGreenhill]

Add CI/CD to provision, build, test, deploy

AC

• all infrastructure is created and updated via CI pipeline
• ansible provisions infra resources in CI
• app changes are deployed to staging on PR
• app changes are deployed to prod on merge

[prasadpilla]

@BrianGreenhill Which CI product you suggest?

[BrianGreenhill]

i'd suggest CircleCI. It has a nice free tier and can be linked directly to github easily.