Change log for GCP_APIGEE_X

Date Changes
2024-10-16 Added support for cloud logging policy logs.
2024-09-30 Enhancement:
- When jsonPayload.responseStatusCode is an integer then converted it to string.
- Converted jsonPayload.headers.x-forwarded-proto to uppercase and then mapped to network.application_protocol.
- Mapped jsonPayload.headers.traceparent to additional.fields.
- Mapped jsonPayload.headers.tracestate to additional.fields.
2024-08-29 Enhancement:
- Mapped jsonPayload.headers.x-apim-gateway-id, jsonPayload.headers.x-apigee-tracking-id, jsonPayload.headers.x-request-id-client-supplied, jsonPayload.env, jsonPayload.messageid, jsonPayload.org to principal.resource.attribute.labels.
- Mapped jsonPayload.headers.x-apigee-tls-cipher to network.tls.cipher.
- Mapped jsonPayload.headers.user-agent to network.http.user_agent.
- Mapped jsonPayload.headers.host to principal.hostname.
- Mapped jsonPayload.headers.x-apigee-tls-server-name to network.tls.client.server_name.
- Mapped jsonPayload.headers.x-apigee-tls-protocol to network.tls.version_protocol.
- If jsonPayload.externalClientIp is valid ip, then mapped to target.ip and target.asset.ip else mapped to principal.resource.attribute.labels.
- Mapped jsonPayload.responseStatusCode to network.http.response_code.
2024-07-29 Enhancement:
- Mapped jsonPayload.consumerId, jsonPayload.targetResponseTime, jsonPayload.requestTime, jsonPayload.proxyRequest.headers, jsonPayload.proxyResponse.headers, jsonPayload.apigeeInstance, jsonPayload.customerId, jsonPayload.productName, jsonPayload.appName, jsonPayload.proxyBasePath, jsonPayload.proxyResourcePath, jsonPayload.consumerName, jsonPayload.targetRequestTime, jsonPayload.msgType, jsonPayload.apiName, jsonPayload.serviceAudience, and jsonPayload.responseTime to additional.fields.
- Mapped jsonPayload.targetServer to target.url.
- Mapped jsonPayload.resourceURL to principal.resource.attribute.labels.
- Mapped jsonPayload.targetAudience and jsonPayload.targetEndpointName to target.resource.attribute.labels.
- Mapped jsonPayload.forwardingVMIp to principal.ip and principal.asset.ip
- Mapped jsonPayload.externalClientIp to target.ip and target.asset.ip.
2024-05-22 Promoting to default parser.