Refactor: crmd,libcluster: deprecate the crm_remote_container and crm_remote_baremetal node flags

These flags are being deprecated because nothing uses them and they were set
incorrectly anyway.

The flags were set by crm_remote_peer_cache_refresh(). That function's final
step, checking the CIB status section for remote node state entries, always
used crm_remote_baremetal, which is incorrect because guest nodes have state
entries too. That step would override any crm_remote_container flags set
previously when checking the resources section.