Fix kuttl job to clone repos from zuul projects directory

When running kuttl tests using install_yamls, operators code
are cloned before running the job.

All credits to Douglas Viroel who investigated and fixed
a similar issue downstream.

scenarios/centos-9/kuttl.yml

@@ -1,6 +1,5 @@
 ---
 cifmw_install_yamls_vars:
-  OPERATOR_BASE_DIR: "{{ ansible_user_dir }}/src/github.com/openstack-k8s-operators"
   BMO_SETUP: false
 cifmw_artifacts_basedir: "{{ cifmw_basedir | default(ansible_user_dir ~ '/ci-framework-data') }}"