Basic Auth is exposed in logs on authorization failure

[ilawjr]

Description:
When talaria submits a request with an incorrect basic auth, that auth is exposed in the logs. Basic auth should be hidden.
{"caller":"authorizationHandler.go:127","content-length":752,"level":"error","method":"POST","msg":"request denied","remoteAddress":"[redacted]","sat-client-id":"","token":"Basic [manually redacted]","ts":"2020-04-01T17:49:19.18400027Z","url":"[redacted]","user-agent":"Go-http-client/1.1","validator-error":null,"validator-response":false}

expected:
Basic auth would be obfuscated