Merge bitcoin/bitcoin#31651: ci: Turn CentOS task into native one

fabefd9 ci: Turn CentOS task into native one (MarcoFalke)

Pull request description:

  Cross-compiling to `i686-pc-linux-gnu` on CentOS in the CI is mostly redundant with the `ci/test/00_setup_env_i686_multiprocess.sh` task (albeit it using clang):

  https://github.com/bitcoin/bitcoin/blob/35bf426e02210c1bbb04926f4ca2e0285fbfcd11/ci/test/00_setup_env_i686_multiprocess.sh#L9-L12

  One task seems sufficient as a sanity check, given that there seems to be no real demand for this architecture anyway.

  Turning the task into a native one makes it possible to run the task natively on aarch64 or any other supported architecture.

  Also, remove the install of the `lbzip2` package, which is unused since commit a46065e

  Also, remove the `CONFIG_SHELL` env var, which is unused since the cmake migration. (`CONFIG_SHELL` in depends is still kept).

ACKs for top commit:
  davidgumberg:
    ACK bitcoin/bitcoin@fabefd9
  hebasto:
    ACK fabefd9, tested locally on Ubuntu 24.10.

Tree-SHA512: 5a7b3131b379d11ef602e5821165861e9bdf61d605014bf8fcb33b8e12d8823450798af2d3289b96f7559dfa47b839bf939ddc0b3725efecfeac7ae570a981e7

.cirrus.yml

@@ -140,13 +140,13 @@ task:
     FILE_ENV: "./ci/test/00_setup_env_win64.sh"
 
 task:
-  name: '32-bit CentOS, dash, gui'
+  name: 'CentOS, dash, gui'
   << : *GLOBAL_TASK_TEMPLATE
   persistent_worker:
     labels:
       type: small
   env:
-    FILE_ENV: "./ci/test/00_setup_env_i686_centos.sh"
+    FILE_ENV: "./ci/test/00_setup_env_native_centos.sh"
 
 task:
   name: 'previous releases, depends DEBUG'

ci/test/00_setup_env_i686_centos.sh → ci/test/00_setup_env_native_centos.sh

@@ -6,12 +6,10 @@
 
 export LC_ALL=C.UTF-8
 
-export HOST=i686-pc-linux-gnu
-export CONTAINER_NAME=ci_i686_centos
-export CI_IMAGE_NAME_TAG="quay.io/centos/amd64:stream9"
+export CONTAINER_NAME=ci_native_centos
+export CI_IMAGE_NAME_TAG="quay.io/centos/centos:stream9"
 export STREAM_GCC_V="12"
-export CI_BASE_PACKAGES="gcc-toolset-${STREAM_GCC_V}-gcc-c++ glibc-devel.x86_64 gcc-toolset-${STREAM_GCC_V}-libstdc++-devel.x86_64 glibc-devel.i686 gcc-toolset-${STREAM_GCC_V}-libstdc++-devel.i686 ccache make git python3 python3-pip which patch lbzip2 xz procps-ng dash rsync coreutils bison e2fsprogs cmake"
+export CI_BASE_PACKAGES="gcc-toolset-${STREAM_GCC_V}-gcc-c++ glibc-devel gcc-toolset-${STREAM_GCC_V}-libstdc++-devel ccache make git python3 python3-pip which patch xz procps-ng dash rsync coreutils bison e2fsprogs cmake"
 export PIP_PACKAGES="pyzmq"
 export GOAL="install"
 export BITCOIN_CONFIG="-DWITH_ZMQ=ON -DBUILD_GUI=ON -DREDUCE_EXPORTS=ON"
-export CONFIG_SHELL="/bin/dash"