Add more logs for analysis (#523)

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# PR Details
## Description
Add more terminal logs to catch http request from v2xhub to cloud. The
timestamp before the request and after successfully response from the
cloud.
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## Related Issue
#515
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## Motivation and Context
ERV verification testing metrics
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## How Has This Been Tested?
NA
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## Types of changes

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- [x] Defect fix (non-breaking change that fixes an issue)
- [ ] New feature (non-breaking change that adds functionality)
- [ ] Breaking change (fix or feature that cause existing functionality
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## Checklist:

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- [ ] I have added any new packages to the sonar-scanner.properties file
- [ ] My change requires a change to the documentation.
- [ ] I have updated the documentation accordingly.
- [x] I have read the **CONTRIBUTING** document.
[V2XHUB Contributing
Guide](https://github.com/usdot-fhwa-OPS/V2X-Hub/blob/develop/Contributing.md)
- [ ] I have added tests to cover my changes.
- [ ] All new and existing tests passed.

src/v2i-hub/ERVCloudForwardingPlugin/src/ERVCloudForwardingPlugin.cpp

@@ -196,13 +196,14 @@ namespace ERVCloudForwardingPlugin
                 curl_easy_setopt(req, CURLOPT_POSTFIELDS, local_msg.c_str());
                 curl_easy_setopt(req, CURLOPT_TIMEOUT_MS, 5000L); //Http request timeout in 5 seconds
                 curl_easy_setopt(req, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1_2);
+                PLOG(logDEBUG) << "Forwarding message to cloud via curl: " << local_msg << endl;
                 res = curl_easy_perform(req);
                 if (res != CURLE_OK)
                 {
                     fprintf(stderr, "curl send failed: %s\n", curl_easy_strerror(res));
                     return EXIT_FAILURE;
                 }else{
-                    PLOG(logDEBUG) << "Successfully forward ERV BSM to cloud: " << local_msg << endl;
+                    PLOG(logDEBUG) << "Successfully forwarded message to cloud via curl: " << local_msg << endl;
                 }
             }
             curl_easy_cleanup(req);