lcitool: Fix cirrus job formatting for 'out of credits' handling

Commit d6d38344 added handling for out of credists situation on 'Cirrus CI' by attempting to handle the return code '3' from 'cirrus-run' as 'allow-failure'. Unforunately the definition in the 'template' section was wrong as it gets overwritten by the individual job definitions which pass an explicit 'allow-failure' statement which completely overwrites the value from the template.

To handle this properly we need to do either:

allow_failure: true

or in case when w don't want to disallow failure except when the script returns '3':

allow_failure: exit_codes: 3

Signed-off-by: Peter Krempa pkrempa@redhat.com