[improve][ws] Support subscribing multi/pattern topic for Websocket

[Technoboy-]

PIP-307

Motivation

Support subscribing multi/pattern topic for WS.
The new sub-path could be :

/ws/v3/consumer/subscription?topicsPattern="a.*" /ws/v3/consumer/subscription?topics="a,b,c"

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete

[mattisonchao]

Overal LGTM.

[mattisonchao]

Please help fix the checkstyle issue.

[codecov-commenter]

Codecov Report

Merging #21379 (6caf1ec) into master (bd86e4e) will increase coverage by 38.71%.
The diff coverage is 58.82%.

@@              Coverage Diff              @@
##             master   #21379       +/-   ##
=============================================
+ Coverage     34.54%   73.25%   +38.71%     
- Complexity    12084    32609    +20525     
=============================================
  Files          1713     1892      +179     
  Lines        130782   140444     +9662     
  Branches      14250    15436     +1186     
=============================================
+ Hits          45173   102878    +57705     
+ Misses        79577    29475    -50102     
- Partials       6032     8091     +2059     

Flag	Coverage Δ
inttests	24.14% <23.52%> (?)
systests	24.72% <13.23%> (-0.02%)	⬇️
unittests	72.54% <55.88%> (+40.67%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...n/java/org/apache/pulsar/broker/PulsarService.java	83.07% <100.00%> (+15.67%)	⬆️
...pache/pulsar/proxy/server/ProxyServiceStarter.java	66.44% <100.00%> (+34.44%)	⬆️
...che/pulsar/websocket/AbstractWebSocketHandler.java	57.55% <100.00%> (+57.55%)	⬆️
...a/org/apache/pulsar/websocket/ConsumerHandler.java	63.09% <100.00%> (+63.09%)	⬆️
...sar/websocket/service/WebSocketServiceStarter.java	74.46% <100.00%> (+74.46%)	⬆️
.../websocket/WebSocketMultiTopicConsumerServlet.java	88.88% <88.88%> (ø)
...he/pulsar/websocket/MultiTopicConsumerHandler.java	38.63% <38.63%> (ø)

... and 1468 files with indirect coverage changes