Capture log bundle in install step.

In the event of an installation failure, log bundles were not being added to artifacts dir. This commit attempts to identify a log bundle by pattern matching and discards any errors if the file doesn't exist.

Author: patrickdillon

ci-operator/step-registry/ipi/install/install/ipi-install-install-commands.sh

@@ -48,4 +48,5 @@ cp \
     "${dir}/metadata.json" \
     "${dir}/terraform.tfstate"
 cp "${dir}/.openshift_install.log" "${ARTIFACT_DIR}/"
+cp "${dir}"/log-bundle-*.tar.gz "${ARTIFACT_DIR}/" 2>/dev/null || :
 exit "$ret"