ci/multi-pool: Enable IPSec encryption in direct routing mode

Add a matrix configuration for the multi-pool conformance test to run
the connectivity tests with IPSec encryption in direct routing mode.

Signed-off-by: Fabio Falzoi <fabio.falzoi@isovalent.com>

Author: pippolo84

.github/actions/multi-pool/configs.yaml

@@ -40,6 +40,11 @@
   family: 'ipv4'
   kvstore: 'true'
   endpoint-routes: 'enabled'
+- name: 'Direct Routing with IPSec Encryption'
+  tunnel: 'disabled'
+  encryption: 'ipsec'
+  family: 'ipv4'
+  endpoint-routes: 'enabled'
 - name: 'Tunnel Mode with IPSec Encryption'
   tunnel: 'vxlan'
   encryption: 'ipsec'