workflows: Debug info for key rotations

During the key rotations, we compare the number of keys to the expected
number to know where we are in the process (started the rotation or
finished it). The expected number of keys depends on the configuration
so let's print it in the logs to help debug.

Signed-off-by: Paul Chaignon <paul.chaignon@gmail.com>

.github/actions/ipsec-key-rotate/action.yaml

@@ -58,7 +58,7 @@ runs:
             if [[ $keys_in_use == $exp_nb_keys ]]; then
               break
             fi
-            echo "Waiting until key rotation starts (seeing $keys_in_use keys)"
+            echo "Waiting until key rotation starts (seeing $keys_in_use keys, expected $exp_nb_keys)"
             sleep 30s
           done
 
@@ -75,6 +75,6 @@ runs:
             if [[ $keys_in_use == $exp_nb_keys ]]; then
               break
             fi
-            echo "Waiting until key rotation completes (seeing $keys_in_use keys)"
+            echo "Waiting until key rotation completes (seeing $keys_in_use keys, expected $exp_nb_keys)"
             sleep 30s
           done