Build: pacemakerd: properly conditionalize corosync calls
    
    Previously, pacemakerd in its entirety was not built unless corosync support
    was enabled, a throwback to when CMAN and Corosync 1 were supported. Now,
    pacemakerd is built unconditionally, and just its corosync-related calls are
    guarded by corosync support.
    
    This has no effect currently since corosync 2+ is the only supported cluster
    layer, but it offers some future-proofing.
    
    patch_name: 013-pacemakerd.patch
    present_in_specfile: true
    location_in_specfile: 13
    squash_commits: true