Add Running Container Scanning Max Size Limit

What does this MR do?

In scope of &3410 (closed) we are adding new report type: running_container_scanning. Since we are adding new file type to Job Artifacts (in !64211 (closed)), we need to satisfy all file types have corresponding limit file_type check: https://gitlab.com/gitlab-org/gitlab/-/jobs/1352262492. This MR adds new field to satisfy this check.

Migrations

⋊> ~/D/g/gitlab on 330713-add-running-container-scanning-size-liit ⨯ env VERBOSE=true bundle exec rake db:migrate:up VERSION=20210614142311
== 20210614142311 AddRunningContainerScanningMaxSizeToPlanLimits: migrating ===
-- add_column(:plan_limits, :ci_max_artifact_size_running_container_scanning, :integer, {:null=>false, :default=>150})
   -> 0.0061s
== 20210614142311 AddRunningContainerScanningMaxSizeToPlanLimits: migrated (0.0062s) 

⋊> ~/D/g/gitlab on 330713-add-running-container-scanning-size-liit  env VERBOSE=true bundle exec rake db:migrate:down VERSION=20210614142311
== 20210614142311 AddRunningContainerScanningMaxSizeToPlanLimits: reverting ===
-- remove_column(:plan_limits, :ci_max_artifact_size_running_container_scanning, :integer, {:null=>false, :default=>150})
   -> 0.0116s
== 20210614142311 AddRunningContainerScanningMaxSizeToPlanLimits: reverted (0.0160s) 

Does this MR meet the acceptance criteria?

Conformity

• I have included changelog trailers, or none are needed. (Does this MR need a changelog?)
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• I have self-reviewed this MR per code review guidelines.
• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
• I have followed the style guides.
• This change is backwards compatible across updates, or this does not apply.

Availability and Testing

• I have added/updated tests following the Testing Guide, or it's not needed. (Consider all test levels. See the Test Planning Process.)
• [-] I have tested this MR in all supported browsers, or it's not needed.
• [-] I have informed the Infrastructure department of a default or new setting change per definition of done, or it's not needed.

Security

Does this MR contain changes to processing or storing of credentials or tokens, authorization and authentication methods or other items described in the security review guidelines? If not, then delete this Security section.

• [-] 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

Related to #330713 (closed)