Merge pull request #973 from tosky/bump-kuttl-0_20_0

Bump kuttl to 0.20.0

Author: openshift-merge-bot[bot]

devsetup/roles/download_tools/defaults/main.yaml

@@ -1,6 +1,6 @@
 ---
 # kuttl version to use (must be specific version)
-kuttl_version: 0.17.0
+kuttl_version: 0.20.0
 
 # Released version of the opm package (can be set to 'latest')
 opm_version: latest