FIX: specify path for dosp cookie

lib/middleware/anonymous_cache.rb

@@ -201,7 +201,7 @@ module Middleware
         end
 
       if force_anon
-        result[1]["Set-Cookie"] = "dosp=1"
+        result[1]["Set-Cookie"] = "dosp=1; Path=/"
       end
 
       result

spec/components/middleware/anonymous_cache_spec.rb

@@ -94,7 +94,7 @@ describe Middleware::AnonymousCache::Helper do
       is_anon = false
       _status, headers, _body = app.call(env.dup)
       expect(is_anon).to eq(true)
-      expect(headers['Set-Cookie']).to eq('dosp=1')
+      expect(headers['Set-Cookie']).to eq('dosp=1; Path=/')
 
       # tricky change, a 50ms delay still will trigger protection
       # once it is tripped