fix failing tests 032922

[christineguiang]

List of changes:

1. update validation messages in POST /{crop}/brapi/v2/germplasm and PUT /{crop}/brapi/v2/germplasm/{germplasmDbId}

Tasks	/
Pre-merging
Followed basic standards	✅
Ensured that the List of API Services spreadsheet is updated	N/A
Ensured that all test data created and used in the tests are added in the Setting up Initial Data (Data Seeding) page
Ensured that the entire test suite is passing in branch using PostmanCollections-CIRun or PostmanCollections-PerfTests (if changes are related to performance test) jenkins jobs
Ensured that TM4J test cases are updated	N/A
Created backup of the current test data
Post-merging
Ensured that the entire test suite is passing in master using PostmanCollections-CIRun and PostmanCollections-PerfTests (if changes are related to performance test) jenkins jobs
Deleted branch