add global name

[qiujiayu]

Issues resolved

Fix #1379

[membphis]

In Apache APISIX, how about allowing users to customize global variables to solve such problems?

global_name = xxxx

then we can reference it in the plugin, that is an example:

{
    ....
    "name": "$$global_name"
}

[qiujiayu]

In Apache APISIX, how about allowing users to customize global variables to solve such problems?

global_name = xxxx

then we can reference it in the plugin, that is an example:

{
    ....
    "name": "$$global_name"
}

The following configuration needs to be added for the use:

 {
     ....
     "name": "$$global_name"
 }

That will not be able to simplify the configuration.

那就达不到简化配置的效果。

[membphis]

I'm sorry to reply so late, I'm hesitant to add a similar function. Hope to hear more opinions from others.

[qiujiayu]

I'm sorry to reply so late, I'm hesitant to add a similar function. Hope to hear more opinions from others.

@lilien1010 @juzhiyuan @wu-sheng @moonming

What do you think about this?