UpdateAction version 2 not equivalent to UpdateAction version 1

[AlvaroVega]

Comes from #389

perseo-fe/lib/models/updateAction.js

Line 450 in 2f5b2d5

connection.v2.createEntity(changes, { upsert: true }).then(

    // FIXME: createEntity with upsert true is always updating entity,
    // but is not using params.actionType (append or update)
    // Maybe other methods like v2.updateEntityAttributes are more proper ?

UpdateAction with version 2 was introduced by PR #305

UpdateAction with filter (and version2) is working well

[fgalan]

As commented at Skype, maybe the following could work:

 connection.v2.createEntity(changes, { upsert: (actionType !== 'update')}).then( 

[fgalan]

Fixed by PR #394. But let's have this issue opened for a while... so we can ensure it works in e2e CI.