Add JVM arguments required by Log4j 2.x from Jira 9.5

Log4J has been updated to version 2.x on Jira 9.5.x
and new JVM arguments have been included by default
in the setenv.sh and setenv.bat files coming from
fresh Jira installations.

Missing these parameters breaks the runtime log level
modification using the Logging and Profiling page.

- https://support.atlassian.com/jira/kb/temporarily-changing-the-logging-level-doesnt-work-and-no-error-is-shown/
- https://jira.atlassian.com/browse/JRASERVER-62838

Fixes #459

Author: knowit-varesa

templates/setenv.sh.epp

@@ -38,9 +38,11 @@ JVM_CODE_CACHE_ARGS='<%= pick_default($jira::jvm_code_cache_args, $jira::config:
 #
 # The following are the required arguments for Jira.
 #
-<%- if ($jira::product != "servicedesk" and versioncmp($jira::version, '8.11.0') > 0) or ($jira::product == "servicedesk" and (versioncmp($jira::version, '4.11.0') > 0)){ -%>
+<%- if $jira::product != "servicedesk" and versioncmp($jira::version, '9.5.0') >= 0 { -%>
+JVM_REQUIRED_ARGS='-Dlog4j2.contextSelector=org.apache.logging.log4j.core.selector.BasicContextSelector -Dlog4j2.disableJmx=true -Dlog4j2.garbagefree.threadContextMap=true -Dlog4j2.isWebapp=false -Djava.awt.headless=true -Datlassian.standalone=JIRA -Dorg.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER=true -Dmail.mime.decodeparameters=true -Dorg.dom4j.factory=com.atlassian.core.xml.InterningDocumentFactory'
+<%- } elsif ($jira::product != "servicedesk" and versioncmp($jira::version, '8.11.0') > 0) or ($jira::product == "servicedesk" and (versioncmp($jira::version, '4.11.0') > 0)){ -%>
 JVM_REQUIRED_ARGS='-Djava.awt.headless=true -Datlassian.standalone=JIRA -Dorg.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER=true -Dmail.mime.decodeparameters=true -Dorg.dom4j.factory=com.atlassian.core.xml.InterningDocumentFactory'
-<% } else { -%>
+<%- } else { -%>
 JVM_REQUIRED_ARGS='-Djava.awt.headless=true -Datlassian.standalone=JIRA -Dorg.apache.jasper.runtime.BodyContentImpl.LIMIT_BUFFER=true -Dmail.mime.decodeparameters=true'
 <%- } -%>