Wrong resource name in ClusterNode-related commands for SphU.entry(method)

[sczyh30]

Issue Description

Type: bug report

Describe what happened (or what feature you want)

Wrong resource name resolved in ClusterNode-related commands (e.g. tree, cnode and clusterNode) for SphU.entry(method). The actual resource name for the ClusterNode is correct (full-qualified, classes with package name), but when we get all ClusterNode from related API commands, the displayed resource name will be simplified (i.e. package name is omitted).

For example, for the method com.alibaba.csp.demo.DemoService:foo(java.lang.String), the displayed name will be DemoService:foo(String).

This is caused by the getShowName method of MethodResourceWrapper, which will simplify the FQN of the method.

This bug will also affect the resource display in the dashboard, as the data depends on the command center of Sentinel transport module. This could mislead developers.

Describe what you expected to happen

The resource name for the Method instance should be full-qualified.

How to reproduce it (as minimally and precisely as possible)

1. Assume we have a method com.alibaba.csp.sentinel.dashboard.controller.DemoController#link, we get the Method instance via reflection API.
2. Then invoke SphU.entry(method), we can see this in the log: Add child <com.alibaba.csp.sentinel.dashboard.controller.DemoController:link()> to node <xxx>
3. Execute curl localhost:8719/tree, we cound find wrong name DemoController:link() here:

EntranceNode: machine-root(t:0 pq:0.0 bq:0.0 tq:0.0 rt:0.0 prq:0.0 1mp:6 1mb:0 1mt:6)
-EntranceNode: sentinel_web_servlet_context(t:0 pq:0.0 bq:0.0 tq:0.0 rt:0.0 prq:0.0 1mp:6 1mb:0 1mt:6)
--/demo/link(t:0 pq:0.0 bq:0.0 tq:0.0 rt:0.0 prq:0.0 1mp:0 1mb:0 1mt:0)
---DemoController:link()(t:0 pq:0.0 bq:0.0 tq:0.0 rt:0.0 prq:0.0 1mp:0 1mb:0 1mt:0)

t:threadNum  pq:passQps  bq:blockQps  tq:totalQps  rt:averageRt  prq: passRequestQps 1mp:1m-pass 1mb:1m-block 1mt:1m-total

Tell us your environment

Sentinel 1.7.0-SNAPSHOT in master branch

Anything else we need to know?

NONE