etcd3gw: Install all requirements
etcd3gw: Install all requirements

The etcd3gw package tries to install a wheel, and some
package which was implicitly depending on wheel no longer
does.  This causes the setuptools bdist_wheel step to
fail.

Specify all requirements for etcd3gw ahead of time and
install them via apt to avoid this scenario.

Signed-off-by: Tyler Stachecki <ac19b26ca570cbd1d833044669caf79cb1d18c48@bloomberg.net>

bloomberg/chef-bcpc,bloomberg/chef-bcpc,bloomberg/chef-bcpc,bloomberg/chef-bcpc