Migrate containers by match code to cpp-test environment.

This endpoint calls the payc_migrator Lambda function which queries the production
database for containers matching the given match code (supports * wildcards), then
enqueues them for migration to cpp-test via the db_seed Lambda function.

Match Code Wildcards:

• FLEXPO7 - Exact match
• FLEX* - Matches FLEXPO7, FLEXPO8, etc.
• *TEST* - Matches anything containing TEST

Example:

{
  "match_code": "FLEXPO7",
  "skip_validation": false
}

Returns:
Response from the Lambda function with migration results.

Notes:

• Containers are always migrated to cpp-test environment
• skip_validation=true skips validation checks in Lambda for faster processing
• The Lambda function handles concurrent enqueueing of containers