At present the ctests are not properly linked with the built code,
this causes issues when there are interdependencies between the
modules.

The meson build system does not appear to have support for
internal build order or dependncies, so the only way I have found
to make this work is to break out the build of the ctests as a
separate project.

This is required to avoid undefined symbols in the test code for
the next patch in this series.

Signed-off-by: Frode Nordahl <[email protected]>

At present netplan hard codes the location of the `ovs-vsctl`
binary.  This does not work well when trying to integrate with
snaps.

Determine path of `ovs-vsctl` at runtime by checking for both
'/snap/bin/ovs-vsctl' and '/usr/bin/ovs-vsctl' with a preference
of the former.

This allows making use of the Netplan Open vSwitch integration
with for example the MicroOVN snap (and its consumers such as
MicroCloud).

TODO: Figure out how to hanlde the ovsdb-server.service unit check
TODO: Add test cases that checks the snap workflow

Signed-off-by: Frode Nordahl <[email protected]>