Add env support to disable logs for mini-testing

[gauravakto]

TLDR;

• Customer can control log level for miniruntime and testing by setting AKTO_LOG_LEVEL. Default level is set to WARN.

Why

• Excessive logging from our services is raising customers cloud bill.

What

• Add support for disabiling and setting log level logs in mini-testing, mini-runtime.

Test cases

• Logs stopped when env var is AKTO_LOG_LEVEL=OFF
• Log level set as WARN by default
• Log level info and debug are working
• mini-runtime tested
• mini-testing tested

Links

• https://www.slf4j.org/api/org/slf4j/simple/SimpleLogger.html
• https://www.slf4j.org/api/src-html/org/slf4j/simple/SimpleLoggerConfiguration.html
• https://www.slf4j.org/manual.html