chore(ci) Add docker_ssi system-tests scenario (#3597)

Author: robertomonteromiguel

.gitlab/generate-package.php

@@ -98,7 +98,7 @@
 # One pipeline job overrides
 configure_system_tests:
   variables:
-    SYSTEM_TESTS_SCENARIOS_GROUPS: "simple_onboarding,simple_onboarding_profiling,lib-injection,lib-injection-profiling"
+    SYSTEM_TESTS_SCENARIOS_GROUPS: "simple_onboarding,simple_onboarding_profiling,lib-injection,lib-injection-profiling,docker-ssi"
     ALLOW_MULTIPLE_CHILD_LEVELS: "false"
 
 package-oci: