[SPARK-37814] Migrating from log4j 1 to log4j 2 - ASF JIRA

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This is umbrella ticket for all tasks related to migrating to log4j2.

is duplicated by

SPARK-38253 Migrate spark-sql Java library from log4j to slf4j

relates to

SPARK-37727 Show ignored confs & hide warnings for conf already set in SparkSession.builder.getOrCreate

1.	Spark shell sets log level to INFO by default	Resolved	L. C. Hsieh
2.	Remove log4j bridge api usage	Resolved	L. C. Hsieh
3.	SparkSession.setLogLevel not working in Spark Shell	Resolved	L. C. Hsieh
4.	Add support for log4j 2.x to Spark	Resolved	L. C. Hsieh
5.	Fix failed K8S integration test in SparkConfPropagateSuite	Resolved	L. C. Hsieh
6.	Make log event immutable for LogAppender	Resolved	L. C. Hsieh
7.	Upgrade log4j to 2.17	Resolved	L. C. Hsieh
8.	Use log4j2 in examples.	Resolved	William Hyun
9.	Add a scalastyle rule to ban `org.apache.log4j`	Resolved	William Hyun
10.	Upgrade SLF4J to 1.7.32	Resolved	William Hyun
11.	Suppress NoSuchFieldError at setMDCForTask	Resolved	Dongjoon Hyun
12.	Remove slf4j-log4j12 dependency from hadoop-minikdc	Resolved	Dongjoon Hyun
13.	Upgrade log4j from 2.17 to 2.17.1	Resolved	Chia-Ping Tsai
14.	log4j2-defaults.properties is not working since log4j 2 is always initialized by default	Resolved	Chia-Ping Tsai
15.	Refactor TestUtils#configTestLog4j method to use log4j2 api	Resolved	Yang Jie
16.	Clean up deprecation compilation warning related to log4j2	Resolved	Yang Jie
17.	PySpark shell sets log level to INFO by default	Resolved	L. C. Hsieh
18.	Log4j2 MarkerFilter can not filter unnecessary thrift errors	Resolved	Kent Yao 2
19.	Upgrade log4j2 to 2.17.2	Resolved	Yang Jie