After the dependency on setuptools was dropped from python3-testtools, this
exposed eSDK dependencies in devtool and recipetool on python3-setuptools. Add
this to buildtools to fix build failures after the testtools fixes.
(From OE-Core rev: c4431b4dd27d290024472f315858a63aea2a733c)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>