Rollup merge of #63107 - adrian-budau:master, r=alexcrichton
Added support for armv7-unknown-linux-gnueabi/musleabi
Fixes #63101
Some things that are not done and I hope someone can help me with:
* During the ci build of `armv7-unknown-linux-gnueabi` `openssl` must be built (to build cargo) but `openssl` does not yet support this target. This feels slightly like a chicken-and-egg problem, any feedback is welcome.
* Should I add any tests for any of these targets?