testing: Globally define logging via syslog for charon-systemd

We could make the same change for charon (actually setting it for charon
in strongswan.conf.testing would work for charon-systemd too), however,
there are dozens of test cases that currently set charondebug in
ipsec.conf.

testing/tests/af-alg/rw-cert/hosts/carol/etc/strongswan.conf

@@ -1,20 +1,11 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 swanctl {
-  load = pem pkcs1 x509 revocation constraints pubkey openssl random 
+  load = pem pkcs1 x509 revocation constraints pubkey openssl random
 }
 
 charon-systemd {
   load = random nonce test-vectors pem pkcs1 af-alg gmp x509 revocation curl ctr ccm gcm kernel-netlink socket-default updown vici
-
-  syslog {
-    daemon {
-      default = 1
-    }
-    auth {
-      default = 0
-    }
-  }
   integrity_test = yes
   crypto_test {
     on_add = yes

testing/tests/af-alg/rw-cert/hosts/dave/etc/strongswan.conf

@@ -1,20 +1,11 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 swanctl {
-  load = pem pkcs1 x509 revocation constraints pubkey openssl random 
+  load = pem pkcs1 x509 revocation constraints pubkey openssl random
 }
 
 charon-systemd {
   load = random nonce test-vectors aes des sha1 sha2 md5 pem pkcs1 gmp x509 revocation curl hmac xcbc ctr ccm gcm kernel-netlink socket-default updown vici
-
-   syslog {
-    daemon {
-      default = 1
-    }
-    auth {
-      default = 0
-    }
-  }
   integrity_test = yes
   crypto_test {
     on_add = yes

testing/tests/af-alg/rw-cert/hosts/moon/etc/strongswan.conf

@@ -1,20 +1,11 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 swanctl {
-  load = pem pkcs1 x509 revocation constraints pubkey openssl random 
+  load = pem pkcs1 x509 revocation constraints pubkey openssl random
 }
 
 charon-systemd {
   load = random nonce test-vectors pem pkcs1 af-alg gmp x509 revocation curl ctr ccm gcm kernel-netlink socket-default updown vici
-
-  syslog {
-    daemon {
-      default = 1
-    }
-    auth {
-      default = 0
-    }
-  }
   integrity_test = yes
   crypto_test {
     on_add = yes