Merge branch 'ko3n1g/ci/fix-env-export' into 'main'

tests: Fix ENV export

See merge request ADLR/megatron-lm!2189

tests/functional_tests/shell_test_utils/_run_training.sh

@@ -43,15 +43,15 @@ mv $TRAINING_PARAMS_PATH.tmp $TRAINING_PARAMS_PATH
 
 # Pull env vars to export
 ENV_VARS=$(yq '... comments="" | .ENV_VARS | to_entries | .[] | [.key + "=" + .value] | join(" ")' $TRAINING_PARAMS_PATH)
-for ARGUMENT in $ENV_VARS; do
+while IFS= read -r ARGUMENT; do
     KEY=$(echo $ARGUMENT | cut -f1 -d=)
 
     KEY_LENGTH=${#KEY}
     VALUE="${ARGUMENT:$KEY_LENGTH+1}"
 
     export "$KEY"="$VALUE"
     echo "$KEY=$VALUE"
-done
+done <<< "$ENV_VARS"
 
 # Run before script
 SCRIPT=$(cat $TRAINING_PARAMS_PATH | yq '.BEFORE_SCRIPT')