[PHP-E2E] Support v8

[heyanlong]

Please answer these questions before submitting pull request

• Why submit this pull request?

• Bug fix

• New feature provided

• Improve performance

• Related issues

New feature or improvement

• PHP-E2E support v8

[codecov]

Codecov Report

Merging #4862 into master will decrease coverage by 0.20%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #4862      +/-   ##
============================================
- Coverage     51.35%   51.15%   -0.21%     
+ Complexity     2748     2745       -3     
============================================
  Files          1334     1336       +2     
  Lines         28990    29040      +50     
  Branches       3170     3167       -3     
============================================
- Hits          14887    14854      -33     
- Misses        13423    13504      +81     
- Partials        680      682       +2     

Impacted Files	Coverage Δ	Complexity Δ
...er/core/server/auth/AuthenticationInterceptor.java	0.00% <0.00%> (-61.54%)	0.00% <0.00%> (-3.00%)
...er/sharing/server/ReceiverGRPCHandlerRegister.java	30.76% <0.00%> (-46.16%)	2.00% <0.00%> (-3.00%)
...ap/server/core/server/GRPCHandlerRegisterImpl.java	62.50% <0.00%> (-25.00%)	2.00% <0.00%> (-1.00%)
...r/cluster/plugin/standalone/StandaloneManager.java	80.00% <0.00%> (-20.00%)	3.00% <0.00%> (-1.00%)
...ing/oap/server/library/server/grpc/GRPCServer.java	55.00% <0.00%> (-5.00%)	6.00% <0.00%> (-1.00%)
...lysis/manual/networkalias/NetworkAddressAlias.java	58.53% <0.00%> (-4.88%)	5.00% <0.00%> (-1.00%)
...core/analysis/manual/instance/InstanceTraffic.java	54.00% <0.00%> (-4.00%)	7.00% <0.00%> (ø%)
...in/elasticsearch7/client/ElasticSearch7Client.java	61.11% <0.00%> (-3.71%)	17.00% <0.00%> (-1.00%)
.../agent/core/profile/ProfileTaskChannelService.java	45.05% <0.00%> (-2.20%)	9.00% <0.00%> (ø%)
...er/sharing/server/SharingServerModuleProvider.java	37.50% <0.00%> (-1.79%)	8.00% <0.00%> (ø%)
... and 4 more

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[kezhenxu94]

Looks good to me except for some nits