ETSI Catalog Manager Package Management Subscription filtering needs to support the"vnfProductsFromProviders"

• According to ETSI Package Management specification, the “vnfProductsFromProviders”, “vnfdId” or “vnfPkgId” are alternatives (not just “vnfdId” or “vnfPkgId”). 
• Currently, the "vnfId" and "vnfPkgId" subscription filtering is supported.
• We need to support additional package management subscription filtering based on the "vnfProductsFromProviders".