build-unit-test-docker: Update CLI11 1.6.1 -> 1.7.1
build-unit-test-docker: Update CLI11 1.6.1 -> 1.7.1

Change-Id: I9abc8c3e492e7d771dde43c434a923f61dfd30aa
Signed-off-by: William A. Kennington III <30fff5198f4d10ca1117e5f3ec82f3b4b8900d81@google.com>

openbmc/openbmc-build-scripts,openbmc/openbmc-build-scripts