build-unit-test-docker: add bogus echo to force update keyserver
build-unit-test-docker: add bogus echo to force update keyserver

Signed-off-by: Patrick Williams <cbb7353e6d953ef360baf960c122346276c6e320@stwcx.xyz>
Change-Id: I7fe918532f0af4bfac6cd782b6fd3ff9a4763944

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