Dev 1.12: Add GPG and update testing script for 1.12.2

[rkhachatryan]

No description provided.

[rmetzger]

I manually restarted the travis build

[rmetzger]

It seems there's something wrong with the wget -nv -O flink.tgz https://www.apache.org/dyn/closer.cgi?action=download&filename=flink/flink-1.12.2/flink-1.12.2-bin-scala_2.11.tgz command. Also locally, I'm facing issues with the wget call (downloading from the browser works).

[rkhachatryan]

You are right. Quotes are missing in url.

[rmetzger]

Why is this error surfacing now? The Dockerfile hasn't been updated? https://github.com/apache/flink-docker/blame/dev-master/Dockerfile-debian.template#L61

[rkhachatryan]

I don't see any changes in the scripts generating URLs too at least since Jul 2020.
Probably the base image changed?

I opened a PR to check if quoting fixes the problem: #70

[zentol]

Given that other builds are currently passing without the added quotes I'd think that this is just mirrors causing problems.

[rmetzger]

Maybe the 1.12.2 release hasn't been synched to all mirrors yet?
Shall we use archive.apache.org 🙄 ?

[zentol]

the weird thing is that if the mirrors weren't synced wget would just fail and not stall. It looks more like we're hitting an exceptionally slow mirro :/

[rmetzger]

@rkhachatryan maybe push a version to travis where wget is verbosely logging what's going on?

[zentol]

Shall we use archive.apache.org

Given the issues that we're struggling with in the Flink repo I don't think this is a viable option.

[zentol]

Issue seems to be resolved.

[zentol]

+1; please remember to revert the wget change