Fix containers on Darwin
Remove YB CLI container logic to use Narwhal; go 1.13 (#63) * Remove YB CLI container logic to use Narwhal -- updates in Narwhal support Darwin port checks properly
Remove YB CLI container logic to use Narwhal; go 1.13 (#63) * Remove YB CLI container logic to use Narwhal -- updates in Narwhal support Darwin port checks properly