feat(ingest): mysql- add database_alias functionality

[vcs9]

This PR is to add functionality for database_alias in MySQL.

For a table called test_db_001.test_table, adding a database_alias of test_db would rename the table as test_db.test_table

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)

[github-actions]

Unit Test Results (build & test)

  76 files  ±0    76 suites  ±0   26m 48s ⏱️ + 11m 7s
629 tests  - 1  569 ✔️  - 2  59 💤 ±0  1 ❌ +1 

For more details on these failures, see this check.

Results for commit b8708c7. ± Comparison against base commit 9029292.

♻️ This comment has been updated with latest results.

[github-actions]

Unit Test Results (metadata ingestion)

       5 files         5 suites   45m 4s ⏱️
   360 tests    360 ✔️   0 💤 0 ❌
1 638 runs  1 607 ✔️ 31 💤 0 ❌

Results for commit b8708c7.

♻️ This comment has been updated with latest results.

[shirshanka]

LGTM!