testing: use a decent PSK

testing/tests/ha/active-passive/hosts/alice/etc/strongswan.conf

@@ -6,7 +6,7 @@ charon {
     ha {
       local = PH_IP_ALICE
       remote = PH_IP_MOON1
-      secret = 123456 
+      secret = PliyxREnfoPaSXDJx1NrlH0kkKXT/LWZ
       segment_count = 1 
       fifo_interface = yes
       monitor = yes

testing/tests/ha/active-passive/hosts/moon/etc/strongswan.conf

@@ -6,7 +6,7 @@ charon {
     ha {
       local = PH_IP_MOON1
       remote = PH_IP_ALICE
-      secret = 123456
+      secret = PliyxREnfoPaSXDJx1NrlH0kkKXT/LWZ
       segment_count = 1 
       fifo_interface = yes
       monitor = yes