fix(globalpatches): moved require kong.constants into the closure (#…

…12328)

This is necessary because EE has changed `package.path` in this closure,
and we continue leave that at the top level of this file, EE's e2e
test will report the following error:

```
stack traceback:
        /usr/local/share/lua/5.1/kong/constants.lua:8: in main chunk
        [C]: in function 'require'
        /usr/local/share/lua/5.1/kong/globalpatches.lua:8: in main chunk
        [C]: in function 'require'
        /usr/local/bin/kong:6: in function 'file_gen'
        init_worker_by_lua(nginx.conf:118):46: in function <init_worker_by_lua(nginx.conf:118):44>
        [C]: in function 'xpcall'
        init_worker_by_lua(nginx.conf:118):53: in function <init_worker_by_lua(nginx.conf:118):51>
```

kong/globalpatches.lua

@@ -1,5 +1,3 @@
-local constants = require "kong.constants"
-
 local ran_before
 
 
@@ -15,6 +13,7 @@ return function(options)
 
   options = options or {}
   local meta = require "kong.meta"
+  local constants = require "kong.constants"
 
 
   local cjson_safe = require("cjson.safe")