LWLP-589: upload to s3 on post

[xbhouse]

Summary

• Adds support for uploading a provided manifest to S3
• Adds flag to gate storing uploads

Notes:

• Task enqueued by the create handler will be added in a follow up

Testing steps

S3 uploads can be tested with the local minio deployment, but a better test would be in stage

Using minio:

1. Set features.lightwell_store_uploadss: true
2. Open browser to http://localhost:9002 and create a bucket
3. Set the bucket name and minio config at clients.lightwell.coverage_uploads:

  lightwell:
    username:
    password:
    coverage_uploads:
      url: http://localhost:9002
      name: lightwell-ui-coverage-uploads
      access_key: minioadmin
      secret_key: minioadmin
      region: us-east-1

4. POST /coverage_reports/ with a sample manifest file
5. A row should be inserted in coverage_reports and coverage_uploads and file content uploaded to the minio bucket

[TenSt]

lgtm!

[xbhouse]

/retest

[rverdile]

/retest

[rverdile]

/retest

[rverdile]

/retest

[xbhouse]

/retest

[xbhouse]

sorry @rverdile dismissed your review again :) added yet another flag