For #26219
Video explaining the PR: https://www.youtube.com/watch?v=t2hmpE7N-50
This PR includes:
- applying a default/dummy policy to Android enterprise
- Setting up PubSub topic and subscription to point at Fleet Server
- Generating device enrollment token
- Enrolling a device
Although some tests were added, this PR is mostly manually tested.
Integration tests are an outstanding task.
# Checklist for submitter
- [x] If database migrations are included, checked table schema to
confirm autoupdate
- For database migrations:
- [x] Checked schema for all modified table for columns that will
auto-update timestamps during migration.
- [x] Confirmed that updating the timestamps is acceptable, and will not
cause unwanted side effects.
- [x] Ensured the correct collation is explicitly set for character
columns (`COLLATE utf8mb4_unicode_ci`).
- [x] Added/updated automated tests
- [x] Manual QA for all new/changed functionality
