OVS crashes if there are multiple conflicting installations.
As such, the charm currently errors out when detecting system
OVS services.
The problem is that with DPDK, we expect OVS bridges and bonds
to be preconfigured through MAAS/Netplan, which currently
use system (deb) OVS packages.
Instead of erroring out, we'll stop and mask system OVS services,
then reapply Netplan to move the OVS bridges to the snap based
OVS installation. Netplan is expected to contain the following
patch: https://github.com/canonical/netplan/pull/549
Note that any configuration defined in the system OVS db that's
not set in Netplan will be lost.
Change-Id: Id398a2e4ef4cd138aa2db35d71e021f61f94b67d
Signed-off-by: Lucian Petrut <lpetrut@cloudbasesolutions.com>
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