Provides clear methods in contextservice

[Alexkun]

What is the purpose of the change

#2158
Provides clear methods in contextservice

Brief change log

(for example:)

• Add create_time、update_time、access_time in all tables in contextservice
• Add clear-context methods in linkis-cs-server module
• Add clear-context methods in linkis-cs-client

Verifying this change

(Please pick either of the following options)
This change added tests and can be verified as follows:
(example:)

• Added tests in linkis-cs-client.

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yno)
• Anything that affects deployment: (no)
• The MGS(Microservice Governance Services), i.e., Spring Cloud Gateway, OpenFeign, Eureka.: (no)

Documentation

• Does this pull request introduce a new feature? (yes)
• If yes, how is the feature documented? (docs)

[peacewong]

LGTM.

[codecov]

Codecov Report

Merging #2234 (0f7b968) into dev-1.1.3 (9b019f8) will increase coverage by 1.68%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##             dev-1.1.3    #2234      +/-   ##
===============================================
+ Coverage        18.45%   20.14%   +1.68%     
- Complexity         703     1005     +302     
===============================================
  Files              344      425      +81     
  Lines            10723    12926    +2203     
  Branches          1608     2035     +427     
===============================================
+ Hits              1979     2604     +625     
- Misses            8539     9977    +1438     
- Partials           205      345     +140     

Impacted Files	Coverage Δ
...org/apache/linkis/jobhistory/util/QueryUtils.scala	17.64% <0.00%> (-0.27%)	⬇️
...org/apache/linkis/common/utils/VariableUtils.scala	0.00% <0.00%> (ø)
.../apache/linkis/configuration/entity/ConfigKey.java	72.97% <0.00%> (ø)
...he/linkis/scheduler/executer/ExecuteResponse.scala	0.00% <0.00%> (ø)
...rg/apache/linkis/scheduler/executer/Executor.scala	0.00% <0.00%> (ø)
.../apache/linkis/variable/entity/VarKeyAndValue.java	0.00% <0.00%> (ø)
...onfiguration/exception/ConfigurationException.java	0.00% <0.00%> (ø)
.../configuration/validate/ValidatorManagerImpl.scala	40.00% <0.00%> (ø)
...linkis/scheduler/conf/SchedulerConfiguration.scala	100.00% <0.00%> (ø)
...pache/linkis/configuration/entity/ConfigValue.java	89.47% <0.00%> (ø)
... and 73 more

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[peacewong]

LGTM.