Deliver DAST on-demand CI variables to builds

What does this MR do?

this merge combines two other merge requests (!63370 (merged), !63362 (merged)) in order to allow customers to specify a site or scanner profile in their yaml configuration for their dast scans.

Related Issue(s)

• Use DAST Scan profiles from database

Example

when you specify a site or scanner profile in the yaml config, we will look up those records in the database by name and add the calculated variables to the build using DastSiteProfile#ci_variables and DastScannerProfile#ci_variables.

stages:
  - build
  - dast

include:
  - template: DAST.gitlab-ci.yml

dast:
  dast_configuration:
    site_profile: Site Profile
    scanner_profile: Scanner Profile

Context

with dast we have the concept of on-demand scans, which essentially entails storing dast config in the database (dast_scanner_profiles and dast_site_profiles) and triggering scans via GraphQL on a manual basis. the proposal is to reference those database entities by name in the .gitlab-ci.yml and seed their configuration into pipelines triggered via the regular ci/cd process.

Why?

we want to give customers the ability to use dast profiles in yaml in order to simplify the configuration of DAST for customers.

Screenshots

Using

Results

Testing

• enable the feature (Feature.enable(:dast_configuration_ui))
• create a site profile
• create a scanner profile
• create a .gitlab-ci.yml in the repo and fill it in using the example above, replacing profile names with the ones you just created
• go to pipelines and make sure the dast scan executed

Does this MR meet the acceptance criteria?

Conformity

• I have included a changelog entry, or it's not needed. (Does this MR need a changelog?)
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• I have added information for database reviewers in the MR description, or it's not needed. (Does this MR have database related changes?)
• 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