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.
Merge pull request #379 from pasinskim/master

Fix broken expansion of 3.5 HA bundles in bundlesequence