making the helloworld service ready for autoscaling.

Enable autoscaling on both versions of the service:

```bash
kubectl autoscale deployment helloworld-v1 --cpu-percent=50 --min=1 --max=10
kubectl autoscale deployment helloworld-v2 --cpu-percent=50 --min=1 --max=10
kubectl get hpa
```

## Generate load

```bash
./loadgen.sh &
./loadgen.sh & # run it twice to generate lots of load
```

		fmt.Fprintf(os.Stderr, "error: %s\n", msg)
	}
	fmt.Fprintf(os.Stderr, "usage: go tool covdata [command]\n")
	fmt.Fprintf(os.Stderr, `
Commands are:

textfmt     convert coverage data to textual format
percent     output total percentage of statements covered
pkglist     output list of package import paths
func        output coverage profile information for each function
merge       merge data files together

      <h2>{{.Name}}</h2>{{"" -}}
      <p class="filename">{{.File}}</p>{{"\n" -}}
      <pre onClick="pprof_toggle_asm(event)">{{"\n" -}}
        {{printf "  Total:  %10s %10s (flat, cum) %s" .Flat .Cumulative .Percent -}}
        {{range .Lines -}}{{"\n" -}}
          {{/* source line */ -}}
          <span class=line>{{printf " %6d" .Line}}</span>{{" " -}}
          <span class={{.HTMLClass}}>

		t.Fatalf("problems opening text file %s: %v", textfile, err)
	} else {
		inf.Close()
	}

	// Check for percent output with expected tokens.
	strout := sb.String()
	want := "of statements"
	if !strings.Contains(strout, want) {
		t.Logf("output from run: %s\n", strout)
		t.Fatalf("percent output missing token: %q", want)
	}
}

var funcInvoked bool

//go:noinline

			}
			return metaFile, nil
		}
	}
	return "", fmt.Errorf("internal error: unable to locate build action for package %q run action", p.ImportPath)
}

// WriteCoveragePercent writes out to the writer 'w' a "percent
// statements covered" for the package whose test-run action is
// 'runAct', based on the meta-data file 'mf'. This helper is used in
// cases where a user runs "go test -cover" on a package that has

                let frac = ms.GCCPUFraction;
                if (frac < 0) {
                    frac = 0.0;
                }
                let percent = (frac * 100).toFixed(2);
                document.getElementById("GCCPUFraction").innerText = percent + "%";

                updateRefreshTime();
            }
        }

        function onerror(e) {
            console.error(e);
        }
    }

			switch i {
			case 0x5c:
				output = strings.ReplaceAll(output, `\`, `/`)
			case 0x7e:
				output = strings.ReplaceAll(output, `%7e`, `~`)
			}
			if err != nil {
				t.Errorf("failed to unescape percent encoded path %s: %v", input, err)
			}
		}
		percentEncodedCases = append(percentEncodedCases, expect{in: input, out: output})
	}
	framework.NewTest(t).
		Run(func(t framework.TestContext) {
			cases := []struct {

stdout 'pkg4	\S+	coverage: \[no statements\]'
[GOEXPERIMENT:coverageredesign] ! stderr 'link(\.exe"?)? -'
! stderr 'compile(\.exe"?)? -'
! stderr 'cover(\.exe"?)? -'
[GOEXPERIMENT:coverageredesign] stderr 'covdata(\.exe"?)? percent'

# Now add in -coverprofile.
go test -cover -coverprofile=cov.dat ./pkg1 ./pkg2 ./pkg3 ./pkg4
[!GOEXPERIMENT:coverageredesign] stdout 'pkg1	\[no test files\]'

        assert counter.text() == "-"
    }

    void assertHasSuccessRate(int rate) {
        def testDiv = content.select("div#successRate")
        assert testDiv != null
        def counter = testDiv.select("div.percent")
        assert counter != null
        assert counter.text() == "${rate}%"
    }

    void assertHasOverallResult(String result) {
        assert content.select("div#successRate").hasClass(result)
    }

//	| Host0 | ----------> | Host1 | ----------> | Host2 |
//	|-------|             |-------|             |-------|
//

type VirtualServiceMirrorConfig struct {
	Name       string
	Absent     bool
	Percent    float64
	MirrorHost string
}

type testCaseMirror struct {
	name                string
	absent              bool
	percentage          float64
	threshold           float64
	expectedDestination echo.Instances