While waiting for an answer, I added this gradle dependency :
compile fileTree(dir: 'libs', include: '*.jar')
and added Vim25.jar in a directory named "libs".
The management SDK is not available from public repositories at present.
I'd recommend using yavijava (which is based on vijava from SJin, but yavijava is better maintained) when using vim25, fwict the implementation is faster than VMwares and it also has some higher level wrappers which shorten code somewhat. Additionally both yavijava and vijava are both on maven central.