Add Jira Test Result Reporter to the managed set

[basil]

A recent incompatibility with the JUnit plugin could have been detected before it affected production users if this plugin had been in the managed set.

[darinpope]

Going to close #3637 for now. Works fine in weekly and 2.462.x but fails with 2.452.x and lower with:

[ERROR] Failed to execute goal on project sample: Could not collect dependencies for project io.jenkins.tools.bom:sample:hpi:999999-SNAPSHOT
[ERROR] Failed to read artifact descriptor for com.atlassian.jira:jira-rest-java-client-api:jar:5.2.2
[ERROR] 	Caused by: The following artifacts could not be resolved: com.atlassian.platform:platform:pom:3.1.7 (absent): Could not find artifact com.atlassian.platform:platform:pom:3.1.7 in repo.jenkins-ci.org (https://repo.jenkins-ci.org/public/)
[ERROR] Failed to read artifact descriptor for com.atlassian.jira:jira-rest-java-client-core:jar:5.2.2
[ERROR] 	Caused by: The following artifacts could not be resolved: com.atlassian.platform:platform:pom:3.1.7 (absent): com.atlassian.platform:platform:pom:3.1.7 was not found in https://repo.jenkins-ci.org/public/ during a previous attempt. This failure was cached in the local repository and resolution is not reattempted until the update interval of repo.jenkins-ci.org has elapsed or updates are forced

Not really sure how to get that transitive dependency because it doesn't exist anywhere in https://mvnrepository.com/artifact/com.atlassian.platform/platform.

3.1.7 does appear to be in https://mvnrepository.com/artifact/com.atlassian.platform/platform-poms, but again, I can't find where platform lives in a pom.xml.