alfred: upgrade package to latest release 2019.2

[T-X]

This upgrades alfred to v2019.2.

It does not fix the deprecation warnings in dmesg triggered by batadv-vis yet (also see #1756). But I opened a ticket for now for that at open-mesh.org.

[neocturne]

I don't think this is important for Gluon v2019.1, and we should consider dropping gluon-alfred after that.

[rotanid]

@NeoRaider does "not important" mean that it shouldnt be merged?

[T-X]

@NeoRaider: Yes, you are right, it's not important. There is also pretty much no functional difference, the changes to alfred are all cosmetic.

My thinking was to stay consistent with the versions of batman-adv/batctl/alfred for the matter of form. And to avoid potential confusion (e.g. someone looking at "alfred -v" and then out of habit thinking he/she would be running batman-adv v2018.x or something stupid like that).

Does that make sense?

[neocturne]

Running "alfred -v" to find out the batadv version would be quite creative ;) I don't even think there are many sites left that still use alfred, considering the packet size issues it had when respondd was created...

I'd like to avoid adding patches to Gluon that we don't need, so I'm closing this.

[T-X]

Oki doki, but thanks for your consideration :-).