init: Add Wants= dependencies to systemd units

If no other units have dependencies on network-online.target or
syslog.target they might not get initialized resulting in a possibly
non-ideal startup order.

Closes strongswan/strongswan#2279

init/systemd-starter/strongswan-starter.service.in

@@ -1,6 +1,7 @@
 [Unit]
 Description=strongSwan IPsec IKEv1/IKEv2 daemon using ipsec.conf
 After=syslog.target network-online.target
+Wants=syslog.target network-online.target
 
 [Service]
 ExecStart=@SBINDIR@/@IPSEC_SCRIPT@ start --nofork

init/systemd/strongswan.service.in

@@ -1,6 +1,7 @@
 [Unit]
 Description=strongSwan IPsec IKEv1/IKEv2 daemon using swanctl
 After=network-online.target
+Wants=network-online.target
 
 [Service]
 Type=notify