Update README.md (#2045)
Update README.md (#2045)

Automatic merge from submit-queue.

Update e2e framework README.md

**What this PR does / why we need it**:

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
none
```

Modified:
1. Run on mac
2. Run single test case
istio/istio,geeknoid/istio,geeknoid/istio,frankbu/istio,frankbu/istio,frankbu/istio,istio/istio,smawson/istio,istio/istio,geeknoid/istio,frankbu/istio,geeknoid/istio,smawson/istio,smawson/istio,geeknoid/istio,geeknoid/istio,frankbu/istio,smawson/istio,istio/istio,smawson/istio,frankbu/istio,istio/istio,smawson/istio