test: new weldr client compatibility for test scripts

- Handle the array responses from the new weldr-client (>= 35.6).
- Move the `get_build_info` function to shared_libs.sh to source and
  reuse in multiple places.

test/cases/aws.sh

@@ -10,21 +10,13 @@
 set -euo pipefail
 
 source /usr/libexec/osbuild-composer-test/set-env-variables.sh
+source /usr/libexec/tests/osbuild-composer/shared_lib.sh
 
 # Colorful output.
 function greenprint {
     echo -e "\033[1;32m[$(date -Isecond)] ${1}\033[0m"
 }
 
-function get_build_info() {
-    key="$1"
-    fname="$2"
-    if rpm -q --quiet weldr-client; then
-        key=".body${key}"
-    fi
-    jq -r "${key}" "${fname}"
-}
-
 # Container image used for cloud provider CLI tools
 CONTAINER_IMAGE_CLOUD_TOOLS="quay.io/osbuild/cloud-tools:latest"
 
@@ -111,14 +103,6 @@ get_compose_metadata () {
     sudo cat "${COMPOSE_ID}".json | jq -M '.' | tee "$METADATA_FILE" > /dev/null
 }
 
-is_weldr_client_installed () {
-    if rpm --quiet -q weldr-client; then
-        echo true
-    else
-        echo false
-    fi
-}
-
 # Write an AWS TOML file
 tee "$AWS_CONFIG" > /dev/null << EOF
 provider = "aws"