Common generator scripts for all client libraries

To generate a client, first make sure the client generator exists. For any language other than go, check openapi/ folder for a script with ${CLIENT_LANGUAGE}.sh and run this command:

${CLIENT_LANGUAGE}.sh OUTPUT_DIR SETTING_FILE

SETTING_FILE is a bash script exporting required setting to generate a client. These are normally:

• KUBERNETES_BRANCH: The kubernetes branch to get OpenAPI spec from. e.g. "master"
• CLIENT_VERSION: Client version string. e.g. "1.0.0b1"
• PACKAGE_NAME: Package name for the generated client. e.g. "kubernetes"

Recommended structure is to generate client in a folder called kubernetes at the root of the client repo and put all settings in a file named settings at the root of the repo. If you followed these recommendations, you can simply run autoupdate script anywhere inside the client repo:

cd ${CLIENT_ROOT}/...
${GEN_REPO_ROOT}/openapi/autoupdate.sh