Test failure: com.linecorp.armeria.server.ServerBuilderTest.contextHook()

[my4-dev]

Motivation:

#5769

Modifications:

• Added tearDown method with @AfterEach in order to reset each count variables used in tests

When executing this test in my local env, this test succeeded and I wasn't sure why this test failure was caused. But, after adding this tearDown method, we will be able to avoid inappropriate variables staying in cnt variables.

Result:

• Closes #5769
• Test failure: com.linecorp.armeria.server.ServerBuilderTest.contextHook() will be resolved.

[github-actions[bot]]

🔍 Build Scan® (commit: 09acbdcd8ec2b6a85684be58af47ae10bfab6b76)

Job name	Status	Build Scan®
build-self-hosted-unsafe-jdk-8	✅	https://ge.armeria.dev/s/bdbezeac6gfru
build-self-hosted-unsafe-jdk-21-snapshot-blockhound	✅	https://ge.armeria.dev/s/ouhqdknradpuu
build-self-hosted-unsafe-jdk-17-min-java-17-coverage	✅	https://ge.armeria.dev/s/kewvkpmrocfpk
build-self-hosted-unsafe-jdk-17-min-java-11	✅	https://ge.armeria.dev/s/6sjr4leqax43s
build-self-hosted-unsafe-jdk-17-leak	✅	https://ge.armeria.dev/s/un33uhi2ogrnc
build-self-hosted-unsafe-jdk-11	✅	https://ge.armeria.dev/s/aajyjjtbgv3e6
build-macos-12-jdk-21	✅	https://ge.armeria.dev/s/whdt3fftuuskg