ci: Allow PIP_PACKAGES on centos

This was added in 7fc5e86 but I can't
see a reason why this should be forbidden.

Author: MacroFake

ci/test/00_setup_env_i686_centos.sh

@@ -9,7 +9,8 @@ export LC_ALL=C.UTF-8
 export HOST=i686-pc-linux-gnu
 export CONTAINER_NAME=ci_i686_centos
 export DOCKER_NAME_TAG=quay.io/centos/centos:stream8
-export DOCKER_PACKAGES="gcc-c++ glibc-devel.x86_64 libstdc++-devel.x86_64 glibc-devel.i686 libstdc++-devel.i686 ccache libtool make git python3 python3-zmq which patch lbzip2 xz procps-ng dash rsync coreutils bison"
+export DOCKER_PACKAGES="gcc-c++ glibc-devel.x86_64 libstdc++-devel.x86_64 glibc-devel.i686 libstdc++-devel.i686 ccache libtool make git python3 python3-pip which patch lbzip2 xz procps-ng dash rsync coreutils bison"
+export PIP_PACKAGES="pyzmq"
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-zmq --with-gui=qt5 --enable-reduce-exports"
 export CONFIG_SHELL="/bin/dash"

ci/test/04_install.sh

@@ -10,12 +10,6 @@ if [[ $QEMU_USER_CMD == qemu-s390* ]]; then
   export LC_ALL=C
 fi
 
-if [ "$CI_OS_NAME" == "macos" ]; then
-  sudo -H pip3 install --upgrade pip
-  # shellcheck disable=SC2086
-  IN_GETOPT_BIN="/usr/local/opt/gnu-getopt/bin/getopt" ${CI_RETRY_EXE} pip3 install --user $PIP_PACKAGES
-fi
-
 # Create folders that are mounted into the docker
 mkdir -p "${CCACHE_DIR}"
 mkdir -p "${PREVIOUS_RELEASES_DIR}"
@@ -78,9 +72,16 @@ elif [ "$CI_USE_APT_INSTALL" != "no" ]; then
   fi
   ${CI_RETRY_EXE} CI_EXEC apt-get update
   ${CI_RETRY_EXE} CI_EXEC apt-get install --no-install-recommends --no-upgrade -y "$PACKAGES" "$DOCKER_PACKAGES"
-  if [ -n "$PIP_PACKAGES" ]; then
+fi
+
+if [ -n "$PIP_PACKAGES" ]; then
+  if [ "$CI_OS_NAME" == "macos" ]; then
+    sudo -H pip3 install --upgrade pip
+    # shellcheck disable=SC2086
+    IN_GETOPT_BIN="/usr/local/opt/gnu-getopt/bin/getopt" ${CI_RETRY_EXE} pip3 install --user $PIP_PACKAGES
+  else
     # shellcheck disable=SC2086
-    ${CI_RETRY_EXE} pip3 install --user $PIP_PACKAGES
+    ${CI_RETRY_EXE} CI_EXEC pip3 install --user $PIP_PACKAGES
   fi
 fi