When the plugin started out, I didn't know how to use the
`runtest_setup` phase, so I used an automatically-used fixture.

Once the hook usage was introduced, I can now consolidate a lot of the
behavior logic ion one place.

Signed-off-by: Mike Fiedler <[email protected]>

May duplicate some of the other tests, but I wanted to make sure this
was clear.
I may refactor other tests later - it's unclear how to measure how many
times a line is hit right now.

Signed-off-by: Mike Fiedler <[email protected]>

The previous configuration allowed for `allow-hosts` to be passed
without `--disable-socket` to implicitly activate blocking.

This was confusing and inconsistent so we now require it to enable the
global behavior.

This introduces a little more complexity to the setup method, but is
more clear as to what is actually happening.

Signed-off-by: Mike Fiedler <[email protected]>

Signed-off-by: Mike Fiedler <[email protected]>

Signed-off-by: Mike Fiedler <[email protected]>