Initial commit

Commit cloud configuration files in yaml format for cloud-init. Intended
to be read in by cloud scheduler via the VMAMIConfig argument. Will be
further modified adding the #cloud-config header to trigger cloud init.
Tested with various ATLAS belle resources utilizing CernVM 3.

Changes:
	new file:   CERN-PROD_CLOUD.yaml
	new file:   CERN-PROD_CLOUD_MCORE.yaml
	new file:   GOOGLE_COMPUTE_ENGINE.yaml
	new file:   GRIDPP_CLOUD.yaml
	new file:   GRIDPP_MCORE.yaml
	new file:   IAAS.yaml
	new file:   IAAS_MCORE.yaml
	new file:   UKI-NORTHGRID-LANCS-HEP_CLOUD.yaml
	new file:   belle.yaml