zuul: tune the resources of the kuttl job

The default values are not enough and the tests fail..

Author: tosky

zuul.d/jobs.yaml

@@ -15,6 +15,8 @@
       - ^README.md$
       - tests?\/functional
     vars:
+      # the default settings are not enough to make the kuttl tests work
+      crc_parameters: "--memory 20000 --disk-size 120 --cpus 6"
       cifmw_kuttl_tests_env_vars:
         CEPH_TIMEOUT: 90
         PV_NUM: 20