fix(aspects): fix default aspect generation for non-restli locations

[david-leifker]

• Consolidate Default Aspect logic to single utility class
  • Generate default aspects when a key aspect for an entity is not present
  • Do not create browsePath v1 when browsePath v2 is enabled
• Move application of the default aspect creation from restli's AspectResource to EntityService.
• (ebean) Serialize batches with key aspects per URN
• Existing tests updated for the expected default aspects.

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[david-leifker]

This structure contains a lock per urn which expires after 1 minute. This lock which is used for the write patch is only used when a key aspect is found in a batch. Those batches will also contain all default aspects. These specific batches are serialized using the lock.