Fix broken expansion of 3.5 HA bundles in bundlesequence

@(cfengine_enterprise_hub_ha.classification_bundles) and
@(cfengine_enterprise_hub_ha.management_bundles) were reported as
undefined when using 3.5 agent.
(cherry picked from commit 06c0dfb2597084e6716d1b0ad35ae3903fe11a5d)