Update start-ic-db.sh to have gen_conn_addr function defined

Else we get log spam of the form:

```
ovn-ic-db-664f8c97bf-qd2gx ovn-ic-db ovsdb-client: failed to connect to "unix:/var/run/openvswitch/db.sock" (No such file or directory)
ovn-ic-db-664f8c97bf-qd2gx ovn-ic-db ./start-ic-db.sh: line 44: gen_conn_addr: command not found
ovn-ic-db-664f8c97bf-qd2gx ovn-ic-db ovsdb-client: failed to connect to "unix:/var/run/openvswitch/db.sock" (No such file or directory)
ovn-ic-db-664f8c97bf-qd2gx ovn-ic-db ./start-ic-db.sh: line 44: gen_conn_addr: command not found
```

Signed-off-by: Andrew Lee <alee@evroc.com>

Author: andrewlee1089

dist/images/start-ic-db.sh

@@ -57,6 +57,14 @@ function gen_conn_str {
     echo "$x"
 }
 
+function gen_conn_addr {
+    if [[ "$ENABLE_SSL" == "false" ]]; then
+        echo "tcp:[$1]:$2"
+    else
+        echo "ssl:[$1]:$2"
+    fi
+}
+
 function ovn_db_pre_start() {
     local db=""
     local port=""