Switch to retryableHttpClient for GitHub AuthN API Client + More Logs

[yilmi]

Hi,

This pull request is meant to fix issue #994 and adds the following:

• Making GitHub authenticated API Client use the retryableHttpClientTimeout() by default
• Adding the repo URL to the log
  • "scanning git repo complete path: repoPath, time: scanTime"
  • "scanning git repo complete Repo: repoUrl path: repoPath, time: scanTime"
• Adding a logger to all the httpClient supporting one
• Fixing minor documentation issue (missing flags)

This has already helped recover from requests failures as this dev build log output can show:

{
    "level": "debug",
    "msg": "[DEBUG] GET https://api.github.com/repos/ORG/REPO: retrying in 1s (3 left)",
    "name": "RetryableHttpClientTimeout",
    "time": "2023-01-03T10:43:17Z"
}
{
    "level": "debug",
    "msg": "[DEBUG] GET https://api.github.com/orgs/ORG/repos?per_page=100 (status: 502): retrying in 1s (3 left)",
    "name": "RetryableHttpClientTimeout",
    "time": "2023-01-05T07:57:26Z"
}

{
    "level": "debug",
    "msg": "[DEBUG] GET https://keychecker.trufflesecurity.com/fingerprint/<FINGERPRINT> (status: 503): retrying in 0s (3 left)",
    "name": "RetryableHttpClient",
    "time": "2023-01-06T07:44:31Z"
}

This comes from the client - https://github.com/hashicorp/go-retryablehttp/blob/master/client.go#L690

-- EDIT: Added correct log output examples

[dustin-decker]

Thank you for the contribution!

[dustin-decker]

Thank you!