Updated dockerfiles to get the dockcross images from mxnetcipinned

[jlcontreras]

Updating the dockerfiles, as the dockcross images moved to mxnetcipinned on Docker Hub.
https://hub.docker.com/u/mxnetcipinned/

[larroy]

what is that docker repo and what's the difference with the previous? Does this also update cuda? I find this PR confusing.

[jlcontreras]

The dockcross images are no longer in the old repo (mxnetci), they moved to mxnetcipinned, but as far as I know they should be the same.

The cuda update was there by mistake, removed.

Also added your changes from #13532 to fix Jetson builds.

[Roshrini]

@jlcontreras Can you please check the CI failure? Thanks!

[Roshrini]

@mxnet-label-bot Update [pr-awaiting-response]

[anirudhacharya]

@jlcontreras please rebase your PR

[jlcontreras]

Why is the rebase needed? AFAIU this already points to the head of v1.3.x. Jetson still needs fixing though, but I'm not sure if I'll have time for it in the coming weeks.

[sandeep-krishnamurthy]

@marcoabreu - Can this PR be merged?

[vandanavk]

@mxnet-label-bot update [pr-awaiting-testing]

[larroy]

LGTM

[jlcontreras]

Had to add a minor fix to one of the tests so the PR passes CI

[lebeg]

looks good

[marcoabreu]

Merging since the deploy failure is unrelated and will be addressed in #14163 - we have a clash here and have to merge one first.