fix: set feature flag for cloud-init to ignore errors

[fatz]

What problem does this PR solve?:

• feature flags for ubuntu 20.04 not set due to regex and version missmatch.
• on centos 7.9 no featureflags set due to cloud-init sending version string on stderr
• supersceedes fix: always set feature flag #548

Which issue(s) does this PR fix?:

• https://jira.d2iq.com/browse/D2IQ-93868

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

fix: cloud-init feature flags where not set on ubuntu 20.04 leading to images not being usable by CAPI

[github-actions]

File	Coverage
All files	15%	❌
pkg/ansible/runner.go	0%	❌
pkg/app/artifacts.go	0%	❌
pkg/app/build.go	0%	❌
pkg/app/build_azure.go	2%	❌
pkg/app/build_gcp.go	0%	❌
pkg/app/config.go	49%	❌
pkg/app/errors.go	0%	❌
pkg/app/provision.go	0%	❌
pkg/app/root.go	0%	❌
pkg/app/utils.go	7%	❌
pkg/app/validate.go	0%	❌
pkg/appansible/io.go	0%	❌
pkg/appansible/playbook.go	0%	❌
pkg/azure/azure.go	0%	❌
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pkg/packer/manifest.go	0%	❌
pkg/packer/packer.go	0%	❌
pkg/stringutil/rand.go	0%	❌
pkg/version/info.go	8%	❌

Minimum allowed coverage is 75%

Generated by 🐒 cobertura-action against b5f7b0c

[fatz]

so when executing molecule tests centos-7 is failing

fatal: [konvoyimage-centos7.9-julferts-local]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'epel_centos_7
_rpm_gpg_key' is undefined\n\nThe error appears to be in '/Users/julferts/golang/src/github.com/mesosphere/konvoy-image-builder/ansible/roles/repo/tasks
/redhat.yaml': line 44, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- n
ame: add epel gpg key for centos 7\n  ^ here\n"}

this seems to be related to main branch as #551 works absolutely fine

[fatz]

the fatal above is due to missing defaults in repo role. #482 removed defaults from GPU module as that role was included by defaults its defaults where used by the repo role. The last commit makes it clear and removes external role dependencies of the repo role