ci: Change 32-bit Docker images to use EOL repos

(backport <https://github.com/rust-lang/libc/pull/4120>)
(cherry picked from commit 9830960c19c53b1527593413e0f55c8cfb067344)

Upgrade Docker images to Ubuntu 23.10

Update Docker image to Ubuntu 22.04

Signed-off-by: Yuki Okushi <[email protected]>

Update Ubuntu images to 20.04

Update Ubuntu images to 19.10

Update Ubuntu images to 19.04

Upgrade bunch of EOL docker images to Ubuntu 18.04

Leverage Cargo's target runner support to execute tests

Use Ubuntu 17.10 as the base image

Test against newer c libraries

Specifically:

* Update the base docker images to ubuntu 16.10
* Update musl to version 1.1.15

This is necessary since the versions we were previously using do not
de

Test against newer c libraries

Specifically:

* Update the base docker images to ubuntu 16.10
* Update musl to version 1.1.15

This is necessary since the versions we were previously using do not
define CLONE_NEWCGROUP, so adding the symbol to the libc crate causes
test failures.

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Get powerpc-unknown-linux-gnu working and tested