connman: mark connman-wait-online as SYSTEMD_PACKAGE

The connman-wait-online package currently isn't marked as
systemd-enabled package. This means it is impossible to
auto-enable the service during image creation or package
installation, as no preset files and no pkg_postinst()
snippet is being created.

This change should have been done as part of the
upgrade to v1.31

Note:
connman-wait-online is needed when connman is in use
in more complex network/interface setups for systemd's
network-online.target to report success.
systemd-networkd's systemd-networkd-wait-online.service
alone doesn't work in such scenarios and simply times
out, as it know nothing about the expected network/
interface configuration, meaning the target doesn't
boot successfully (systemctl list-units --failed),
and long delays are seen, caused by waiting for the
systemd-networkd-wait-online.service timeout.

(From OE-Core rev: 1a8d18eeee6dc188d8becc778bfa933031490781)

Signed-off-by: André Draszik <git@andred.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/connman/connman.inc

@@ -59,7 +59,7 @@ INITSCRIPT_NAME = "connman"
 INITSCRIPT_PARAMS = "start 05 5 2 3 . stop 22 0 1 6 ."
 
 python __anonymous () {
-    systemd_packages = "${PN}"
+    systemd_packages = "${PN} ${PN}-wait-online"
     pkgconfig = d.getVar('PACKAGECONFIG')
     if ('openvpn' or 'vpnc' or 'l2tp' or 'pptp') in pkgconfig.split():
         systemd_packages += " ${PN}-vpn"