Specify where Jenkins would store records of the past builds.
This value can include the following variables.
- ${JENKINS_HOME} — Jenkins home directory.
- ${ITEM_ROOTDIR} — Root directory of a job for which the default workspace is allocated.
- ${ITEM_FULL_NAME} — '/'-separated job name, like "foo/bar".
Changing this value allows you to put build records on a bigger but slow disk,
while keeping JENKINS_HOME on highly available backed up drive, for example.
Default value is ${ITEM_ROOTDIR}/builds.