Returns a bool whether or not this node is a bhyve hypervisor

def _is_bhyve_hyper():
    '''
    Returns a bool whether or not this node is a bhyve hypervisor
    '''
    sysctl_cmd = 'sysctl hw.vmm.create'
    vmm_enabled = False
    try:
        stdout = subprocess.Popen(sysctl_cmd,
                                  shell=True,
                                  stdout=subprocess.PIPE).communicate()[0]
        vmm_enabled = len(salt.utils.stringutils.to_str(stdout).split('"')[1]) != 0
    except IndexError:
        pass
    return vmm_enabled