Remove nils from project_statistics.packages_size

What does this MR do?

This is a plain port of gitlab-org/gitlab-ce!28400 it only fixes a conflict in db/schema.rb

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Documentation created/updated or follow-up review issue created
• Code review guidelines
• Merge request performance guidelines
• Style guides
• Database guides
• Separation of EE specific content

Performance and testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• Label as security and @ mention @gitlab-com/gl-security/appsec
• The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• Security reports checked/validated by a reviewer from the AppSec team

	1 Message
	This merge request adds or changes files that require a review from the Database team.

Database Review

The following files require a review from the Database team:

• db/migrate/20190516155724_change_packages_size_defaults_in_project_statistics.rb
• db/schema.rb

To make sure these changes are reviewed, take the following steps:

1. Edit your merge request, and add gl-database to the list of Group approvers.
2. Mention @gl-database in a separate comment, and explain what needs to be reviewed by the team. Please don't mention the team until your changes are ready for review.

Reviewer roulette

Changes that require review have been detected! A merge request is normally reviewed by both a reviewer and a maintainer in its primary category (e.g. frontend or backend), and by a maintainer in all other categories.

To spread load more evenly across eligible reviewers, Danger has randomly picked a candidate for each review slot. Feel free to override this selection if you think someone else would be better-suited, or the chosen person is unavailable.

Once you've decided who will review this merge request, mention them as you normally would! Danger does not (yet?) automatically notify them for you.

Category	Reviewer	Maintainer
backend	Francisco Javier López (@fjsanpedro)	James Lopez (@jameslopez)
database	Yun Guo (@yguo)	Andreas Brandl (@abrandl)

Generated by Danger

changed milestone to %12.0

added backend backstage [DEPRECATED] database + 1 deleted label

added 154 commits

• aa4d65be...ecda2031 - 152 commits from branch master
• ad8b70bf - Remove nils from project_statistics.packages_size
• 5e145086 - Test packages_size before running the migration

Compare with previous version

approved this merge request

@nolith FYI I've rebased this MR against master and cherry-picked the latest CE commit, in case DB decides to merge it right away

added 345 commits

• 5e145086...58c4a03a - 344 commits from branch master
• e62c6f97 - Remove nils from project_statistics.packages_size

Compare with previous version

rebased on master due to merge conflicts

added 193 commits

• e62c6f97...3469e336 - 192 commits from branch master
• d7c4a389 - Remove nils from project_statistics.packages_size

Compare with previous version

added 115 commits

• d7c4a389...a1848c8b - 114 commits from branch master
• f8f35ff7 - Remove nils from project_statistics.packages_size

Compare with previous version

the failure is not relevant. it's a broken locale/gitlab.pot on master

added 127 commits

• f8f35ff7...c145e7f2 - 126 commits from branch master
• 9d2753db - Remove nils from project_statistics.packages_size

Compare with previous version

rebased on master because of master:broken failures

enabled an automatic merge when the pipeline for 9d2753db succeeds

merged

mentioned in commit 89e3c850