Running hack/make-rules/test-e2e-node.sh or test/e2e_node/conformance/run_test.sh
with a password-less sudo user on a dev box right now requires to first
create a password for that user, and then type it every time one wants
to run these tests. This patch is fixing this by not asking for sudo
credentials if it seems the user can run any command without a
password.
Signed-off-by: Jean Rouge <rougej+github@gmail.com>
1bd3d8b929