rack-protection: Use a glob to select middlewares
rack-protection: Use a glob to select middlewares

StrictTransport, CookieTossing, and ContentSecurityPolicy were not
listed in the gemspec and hence not packaged. Let's use a glob to select
middlewares to prevent this from happening in the future!

JonMidhir/sinatra,mwpastore/sinatra,sinatra/sinatra,mwpastore/sinatra,mwpastore/sinatra,ryanshaw/sinatra,JonMidhir/sinatra,JonMidhir/sinatra,jkowens/sinatra,jkowens/sinatra,ryanshaw/sinatra,jkowens/sinatra,sinatra/sinatra