jenkins: enable select-compiler.sh on UBI8

[richardlau]

Refs: #3317 (comment)

---

This needs a corresponding change in node-test-commit-linux-containered to call select-compiler.sh on the ubi81_sharedlibs_openssl111fips_x64 configuration.

e.g. Insert the following at the top of the script:

export CCACHE_BASEDIR=$PWD
curl -sLO https://raw.githubusercontent.com/nodejs/build/main/jenkins/scripts/select-compiler.sh
. ./select-compiler.sh

Test build using select-compiler.sh from main (still defaults to gcc 8 as it falls through all conditionals):

• https://ci.nodejs.org/job/richardlau-node-test-commit-linux-containered/23/nodes=ubi81_sharedlibs_openssl111fips_x64/consoleFull

Test build showing GCC 10 is picked (using the modified select-compiler.sh from this PR):

• https://ci.nodejs.org/job/richardlau-node-test-commit-linux-containered/24/nodes=ubi81_sharedlibs_openssl111fips_x64/consoleFull

Test build for https://github.com/targos/node/tree/c%2B%2B20:

• https://ci.nodejs.org/job/richardlau-node-test-commit-linux-containered/25/nodes=ubi81_sharedlibs_openssl111fips_x64/consoleFull

cc @targos

[richardlau]

This needs a corresponding change in node-test-commit-linux-containered to call select-compiler.sh on the ubi81_sharedlibs_openssl111fips_x64 configuration.

e.g. Insert the following at the top of the script:

export CCACHE_BASEDIR=$PWD
curl -sLO https://raw.githubusercontent.com/nodejs/build/main/jenkins/scripts/select-compiler.sh
. ./select-compiler.sh

Test build using select-compiler.sh from main (still defaults to gcc 8 as it falls through all conditionals):

* https://ci.nodejs.org/job/richardlau-node-test-commit-linux-containered/23/nodes=ubi81_sharedlibs_openssl111fips_x64/consoleFull

Since the test build showed there's no harm in calling the current select-compiler.sh script from main (i.e. the script is called but no change in compiler occurs without the changes in this PR) I've made the change to the ubi81_sharedlibs_openssl111fips_x64 configuration. The job should then pick up the changes from this PR when it is merged into main.