Build #lastStable -> [i] 5.0.400

Parameters
 buildId
The build id of the gef-master job to promote or 'lastStable' or 'lastSuccessful'
 buildType
The build type: i(ntegration), s(table), r(elease)
 promoteUpdateSite
Whether to promote to a remote update-site: y(es), n(o)
 mergeWithExistingSite
Whether to merge with existing update site: (y)es, (n)o
 promoteDropFiles
Whether to generate drop files: y(es), n(o)
 releaseLabel
The release label used to label the (nested) update site, e.g.: 3.10.0, 3.10.1, 4.0.0
 releaseLabelSuffix
An optional release label suffix to be appended to drop files and (nested) update site name, e.g. M1, RC1