Handle "connection reset by peer"

[jammasterj89]

I was seeing a lot of 'connection reset by peer' errors, so this change helps prevent the test from crashing when they occur.

[goldeninetz]

There is a retry count already in the code, could we leverage that as well?
master...goldeninetz:ssllabs-scan:sa2477errorhandling

				log.Fatalf("[ERROR] HTTP request failed: %v (ref#2)", err.Error())
				if retryCount < 5 {
//					if logLevel >= LOG_WARNING {
						log.Printf("[WARNING] Attempt %v HTTP request failed: %v (ref#2)", retryCount, err.Error())
//					}
				} else {
					log.Fatalf("[ERROR] HTTP request failed: %v (ref#2)", err.Error())
				}
			}