Remove need to special case cwd for setenv

[sajayantony]

All options would be specified as follows under the options property.

{
    "command": "setenv",
    "options" " {
        "env": {
             "Test": "TestValue"
            },   
        "logdir": "X:/logoutputpath",
        "cwd" : "/mnt/logs"
    } 
}