fix: Log underlying error when Dynatrace generation check fails

If the DT generation validation failed with an expected (non HTTP code) error, we
previously swalled the actual error completely, making this case impossible to
debug based on the logs alone. Thus the error is now included in the log.

cmd/monaco/cmdutils/cmdutils.go

@@ -62,7 +62,7 @@ func isClassicEnvironment(env manifest.EnvironmentDefinition) bool {
 				log.Error(err.Error())
 			}
 		} else {
-			log.Error("Could not connect to environment %q (%s)", env.Name, env.URL.Value)
+			log.Error("Could not connect to environment %q (%s): %v", env.Name, env.URL.Value, err)
 		}
 		return false
 	}
@@ -85,7 +85,7 @@ func isPlatformEnvironment(env manifest.EnvironmentDefinition) bool {
 				log.Error(err.Error())
 			}
 		} else {
-			log.Error("Could not connect to environment %q (%s)", env.Name, env.URL.Value)
+			log.Error("Could not connect to environment %q (%s): %v", env.Name, env.URL.Value, err)
 		}
 		return false
 	}