Release tag for 2.17.0

[maven-release-plugin] copy for tag log4j-2.17.0-rc1

Release 2.12.2 of Log4j

[maven-release-plugin] copy for tag log4j-2.12.2-rc1

Release 2.16.0 of Log4j

[maven-release-plugin] copy for tag log4j-2.16.0-rc1

[maven-release-plugin] copy for tag log4j-2.15.1-rc1

Release 2.15.0 of Log4j

[maven-release-plugin] copy for tag log4j-2.15.0-rc2

[maven-release-plugin] copy for tag log4j-2.15.0-rc1