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

testing/tests/sql/net2net-start-pem/test.conf

@@ -10,7 +10,7 @@ VIRTHOSTS="alice venus moon winnetou sun bob"
 # Corresponding block diagram
 #
 DIAGRAM="a-v-m-w-s-b.png"
- 
+
 # Guest instances on which tcpdump is to be started
 #
 TCPDUMPHOSTS="sun"
@@ -19,3 +19,7 @@ TCPDUMPHOSTS="sun"
 # Used for IPsec logging purposes
 #
 IPSECHOSTS="moon sun"
+
+# Guest instances on which databases are used
+#
+DBHOSTS="$IPSECHOSTS"