Instead of using distutils/setuptools for installing the Python code,
just install it into our own Python directory.
Distutils is being removed from Python, and setuptools doesn't work well
when trying to install into your own location. For our usage its just
simpler to install with make.
In addition to removing the configure check for distutils, also remove
the check for pyyaml. This lets the user install pyyaml after Suricata
is installed, and Suricata-Update does handle this case gracefully.
Issue: #5313
Require distutils to install the Python tools. Update the logic
to only install suricatactl (and suricatasc) if Python and
distutils are found. Suricata-Update will only be installed if
bundled, and python-distutils and python-yaml are found.