connman: fix warning by specifying runstatedir at configure time

connman: fix warning by specifying runstatedir at configure time

Without this patch, systemd complains on startup with messages similar
to:

systemd-tmpfiles[128]: /etc/tmpfiles.d/connman_resolvconf.conf:1: Line references path below legacy directory /var/run/, updating /var/run/connman → /run/connman; please update the tmpfiles.d/ drop-in file accordingly.
systemd-tmpfiles[172]: /etc/tmpfiles.d/connman_resolvconf.conf:1: Line references path below legacy directory /var/run/, updating /var/run/connman → /run/connman; please update the tmpfiles.d/ drop-in file accordingly.

By default, connman will use "/var/run/connman" for runstatedir
instead of the now recommended "/run/connman".

Signed-off-by: Marc Ferland <ferlandm@amotus.ca>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>