Metapackage folders for ngcp2

Installer depends on bash only. It will install ngcp metapackage that depends on:

*ngcp-ngcp: Metapackage with all required packages
   * ngcp-services : Metapackage for required services
   * ngcp-config: Metapackage for configuration framework. Depends on:
	* ngcp-templates : Metapackage for template packages
	* ngcp-snazzy: Config framwork magic
	* ngcp-config-main: Main config file
   * ngcp-nth: Metapackage for usefull tools
   * ngcp-keyring: repository keys