Screenshots gets overwritten if there are multiple test failures in one descriptor

[pranavparikh]

If a descriptor has multiple failures, the screenshots gets overwritten as it gets stored at this path - /arrow-target/screenshots/arrow-1.png . Instead , it should be /arrow-target/screenshots/arrow-greeter-test-1.png.

"greeter-test": {
"params": {
"test": "./test-unit.js",
"lib": "../common/lib/greeter.js"
}
},
"greeter-test-2": {
"params": {
"test": "./test-unit-2.js",
"lib": "../common/lib/greeter.js"
}
},
"greeter-test-3": {
"params": {
"test": "./test-unit-2.js",
"lib": "../common/lib/greeter.js"
}
}

[pranavparikh]

Fixed with 0.6.6
https://github.com/yahoo/arrow/blob/master/CHANGELOG.md#066