[BUG] Failure in createConnector should not log API keys.

[austintlee]

What is the bug?
It looks like the error message in the CreateConnector failure response contains the API key in the template.

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

What is the expected behavior?
A clear and concise description of what you expected to happen.

What is your host/environment?

• OS: [e.g. iOS]
• Version [e.g. 22]
• Plugins

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Do you have any additional context?
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[austintlee]

RestMLRemoteInferenceIT > testDeleteConnector FAILED org.opensearch.client.ResponseException: method [POST], host [http://127.0.0.1:55810], URI [/_plugins/_ml/connectors/_create], status line [HTTP/1.1 503 Service Unavailable] {"error":{"root_cause":[{"type":"unavailable_shards_exception","reason":"[.plugins-ml-connector][0] primary shard is not active Timeout: [1m], request: [BulkShardRequest [[.plugins-ml-connector][0]] containing [index {[.plugins-ml-connector][bnO6yZEB1QdOTLrBQkCP], source[{\"name\":\"OpenAI Connector\",\"version\":\"1\",\"description\":\"The connector to public OpenAI model service for GPT 3.5\",\"protocol\":\"http\",\"parameters\":{\"endpoint\":\"api.openai.com\",\"content_type\":\"application/json\",\"auth\":\"API_Key\",\"max_tokens\":\"7\",\"temperature\":\"0\",\"model\":\"gpt-3.5-turbo-instruct\"},\"credential\":{\"openAI_key\":\"<api key>\"},\"actions\":[{\"action_type\":\"PREDICT\",\"method\":\"POST\",\"url\":\"https://${parameters.endpoint}/v1/completions\",\"headers\":{\"Authorization\":\"Bearer ${credential.openAI_key}\"},\"request_body\":\"{ \\\"model\\\": \\\"${parameters.model}\\\", \\\"prompt\\\": \\\"${parameters.prompt}\\\", \\\"max_tokens\\\": ${parameters.max_tokens}, \\\"temperature\\\": ${parameters.temperature} }\"}],\"client_config\":{\"max_connection\":20,\"connection_timeout\":50000,\"read_timeout\":50000,\"retry_backoff_millis\":200,\"retry_timeout_seconds\":30,\"max_retry_times\":0,\"retry_backoff_policy\":\"constant\"}}]}] and a refresh]"}],"type":"unavailable_shards_exception","reason":"[.plugins-ml-connector][0] primary shard is not active Timeout: [1m], request: [BulkShardRequest [[.plugins-ml-connector][0]] containing [index {[.plugins-ml-connector][bnO6yZEB1QdOTLrBQkCP], source[{\"name\":\"OpenAI Connector\",\"version\":\"1\",\"description\":\"The connector to public OpenAI model service for GPT 3.5\",\"protocol\":\"http\",\"parameters\":{\"endpoint\":\"api.openai.com\",\"content_type\":\"application/json\",\"auth\":\"API_Key\",\"max_tokens\":\"7\",\"temperature\":\"0\",\"model\":\"gpt-3.5-turbo-instruct\"},\"credential\":{\"openAI_key\":\"<api key>\"},\"actions\":[{\"action_type\":\"PREDICT\",\"method\":\"POST\",\"url\":\"https://${parameters.endpoint}/v1/completions\",\"headers\":{\"Authorization\":\"Bearer ${credential.openAI_key}\"},\"request_body\":\"{ \\\"model\\\": \\\"${parameters.model}\\\", \\\"prompt\\\": \\\"${parameters.prompt}\\\", \\\"max_tokens\\\": ${parameters.max_tokens}, \\\"temperature\\\": ${parameters.temperature} }\"}],\"client_config\":{\"max_connection\":20,\"connection_timeout\":50000,\"read_timeout\":50000,\"retry_backoff_millis\":200,\"retry_timeout_seconds\":30,\"max_retry_times\":0,\"retry_backoff_policy\":\"constant\"}}]}] and a refresh]"},"status":503} at __randomizedtesting.SeedInfo.seed([5A4DB80AB4595406:9ADC268A24B8243E]:0) at app//org.opensearch.client.RestClient.convertResponse(RestClient.java:501) at app//org.opensearch.client.RestClient.performRequest(RestClient.java:384) at app//org.opensearch.client.RestClient.performRequest(RestClient.java:374) at app//org.opensearch.client.RestClient.performRequest(RestClient.java:359) at app//org.opensearch.ml.utils.TestHelper.makeRequest(TestHelper.java:182) at app//org.opensearch.ml.utils.TestHelper.makeRequest(TestHelper.java:155) at app//org.opensearch.ml.rest.RestMLRemoteInferenceIT.createConnector(RestMLRemoteInferenceIT.java:841) at app//org.opensearch.ml.rest.RestMLRemoteInferenceIT.testDeleteConnector(RestMLRemoteInferenceIT.java:98)