$ salt web-001 node.has_nginx  
web-001:
    False

$ salt web-001 saltutil.sync_all                                 
web-001:
    ----------
    beacons:
    clouds:
    engines:
    executors:
    grains:
    log_handlers:
    matchers:
    modules:
        - modules.node
    output:
    proxymodules:
    renderers:
    returners:
    sdb:
    serializers:
    states:
    thorium:
    utils:

$ salt web-001 node.has_nginx   
web-001:
    True