SWATCH-2043: Print exceptions in swatch contract resources

[Sgitario]

Jira issue: SWATCH-2043

Description

The root cause of this problem is that the DefaultExceptionMapper is capturing the exception to construct the client response, but won't log the exception.

Testing

• Throw an exception in any of the resources, for example, a null pointer exception when creating entitlement contracts:

@Override
  @RolesAllowed({"test"})
  public StatusResponse createPartnerEntitlementContract(PartnerEntitlementContract contract)
      throws ProcessingException {
    String s = null;
    s.toString(); // BOOM!
    return service.createPartnerContract(contract);
  }

• Start the swatch contracts service:

SWATCH_SELF_PSK=placeholder UMB_ENABLED=false RBAC_ENABLED=false ./gradlew :swatch-contracts:quarkusDev

• Try to create an entitlement contract:

curl -v -X POST   'http://localhost:8000/api/swatch-contracts/internal/rpc/partner/contracts'   -H 'accept: application/json'   -H 'x-rh-swatch-psk: placeholder'   -H 'Content-Type: application/json'   -d '{
  "action": "contract-new",
  "redHatSubscriptionNumber": "123456",
  "currentDimensions":[
    {"dimensionName":"control_plane_0","dimensionValue":"730","expirationDate":"2024-11-29T23:59:59.999Z"},
    {"dimensionName":"four_vcpu_0","dimensionValue":"1460","expirationDate":"2024-11-29T23:59:59.999Z"}
  ],
  "cloudIdentifiers": {
    "awsCustomerId": "EK57ooq39qs",
    "awsCustomerAccountId": "568056954830",
    "productCode": "6n58d3s3qpvk22dgew2gal7w3"
  }
}'

The CURL command will return:

*   Trying 127.0.0.1:8000...
* Connected to localhost (127.0.0.1) port 8000 (#0)
> POST /api/swatch-contracts/internal/rpc/partner/contracts HTTP/1.1
> Host: localhost:8000
> User-Agent: curl/8.0.1
> accept: application/json
> x-rh-swatch-psk: placeholder
> Content-Type: application/json
> Content-Length: 467
> 
< HTTP/1.1 500 Internal Server Error
< Content-Type: application/json;charset=UTF-8
< content-length: 121
< 
* Connection #0 to host localhost left intact
{"status":"500","code":"CONTRACTS5000","title":"Cannot invoke \"String.toString()\" because \"s\" is null","detail":null}

After these changes, we should now see the stacktrace in the application logs.