build-unit-test-docker: Add extra test tools

 - lcov: Used for producing coverage results
 - valgrind: Used for memleak and thread sanity checking

Change-Id: I8f0359f7214e4aa0bc4e22fa3bec8f63c86cd040
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed