add node-debug.log* to gitignore
    
    node-debug.log messages started appending an iteger suffix
    so that the current rule in gitignore was not excluding these
    files, for example:
    
            hubs/static/client/npm-debug.log.1537570786
            hubs/static/client/npm-debug.log.1896021309
            hubs/static/client/npm-debug.log.1961022125
            hubs/static/client/npm-debug.log.217180748
            hubs/static/client/npm-debug.log.2388279065
            hubs/static/client/npm-debug.log.2786035756
    
    adding a glob to the end of this rule fixes this issue
    
    Signed-off-by: Ryan Lerch <rlerch@redhat.com>