Build #5817 -> [s] 5.4.0M2

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