Issue #2285 Update docs about lowercase proxy variables
Issue #2285 Update docs about lowercase proxy variables

Signed-off-by: Lalatendu Mohanty <51e26f8eb794e7391b5ea8128d9ade5c4c5ae20b@redhat.com>

minishift/minishift,budhrg/minishift,praveenkumar/minishift,budhrg/minishift,praveenkumar/minishift,LalatenduMohanty/minishift,minishift/minishift,praveenkumar/minishift,LalatenduMohanty/minishift,minishift/minishift,LalatenduMohanty/minishift,budhrg/minishift,jimmidyson/minishift,jimmidyson/minishift,jimmidyson/minishift