build-unit-test-docker: Fix phosphor-logging dependencies

Needed now that 8ebfd3124c2e5312e09208ec03e740c56ff76723 was added

Change-Id: I8efc64c9b8e84ce28b4767c5efce5c4758a85af7
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed