Adapt OAP V9 query protocol

[mrproliu]

Resolve apache/skywalking#8370

1. Add Two commands: layer list and service layer.
2. Add layer attribute in metadata query v2.
3. Adopt v9 or older OAP query.

[codecov-commenter]

Codecov Report

Merging #133 (14192c5) into master (460b194) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #133   +/-   ##
=======================================
  Coverage   27.47%   27.47%           
=======================================
  Files          20       20           
  Lines         404      404           
=======================================
  Hits          111      111           
  Misses        286      286           
  Partials        7        7           

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[wu-sheng]

Lint fails, please fix.

[wu-sheng]

LGTM. @wankai123 Please submit an issue to update the e2e tests.