fix, if appium url set in nodeconfig, dont autopopulate

otherwise, the autopopulation will set the host to localhost/127.0.0.1, which
wont' work if the node and grid are not on the same machine
Merge pull request #2128 from midopa/master

fix, if appium url set in nodeconfig, dont autopopulate
Merge pull request #2144 from jlipps/master

fix sudo behavior for windows (fix #2137)
remove bitdeli because it's broken (fix #2035)