testing: Reduce runtime of all tests that use SQLite databases by storing them in ramfs

testing/tests/sql/net2net-cert/hosts/moon/etc/strongswan.conf

@@ -3,7 +3,7 @@
 charon {
   plugins {
     sql {
-      database = sqlite:///etc/ipsec.d/ipsec.db 
+      database = sqlite:///etc/db.d/ipsec.db
     }
   }
   load = aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 curl revocation hmac stroke kernel-netlink socket-default updown sqlite sql

testing/tests/sql/net2net-cert/hosts/sun/etc/strongswan.conf

@@ -3,7 +3,7 @@
 charon {
   plugins {
     sql {
-      database = sqlite:///etc/ipsec.d/ipsec.db 
+      database = sqlite:///etc/db.d/ipsec.db
     }
   }
   load = aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 curl revocation hmac stroke kernel-netlink socket-default updown sqlite sql