The code in docker/base/start.sh that waits for the log socket does
not work because it includes a bad "space" character after "-S".
This patch changes that character to a real "space" character. It
also sets the SKIP_LOG_SETUP envvar for the Heka container.
TrivialFix
Change-Id: I17a3005df5bbd57678350fc77030e44b5ad6acae