Remove cpuScaler from resolvedOfferings

[sangee2004]

acorn version - v0.10.0-rc5+e2b69a6d

Steps to reproduce the problem:

1. Deploy app with a computeclass that has cpuScaler set
2. Once app is deployed , notice that resolvedOfferings in acorn ps -o json has cpuScaler info.

               "resolvedOfferings": {
                    "containers": {
                        "": {
                            "class": "cc2",
                            "memory": 30000000,
                            "cpuScaler": 0.75
                        },
                        "mywebnew": {
                            "class": "cc2",
                            "memory": 30000000,
                            "cpuScaler": 0.75
                        }
                    },

Expected Behavior:
Remove cpuScaler from resolvedOfferings