Add list_storage_profiles and update find_storage_profile_by_name in VDC OM

Change-Id: I19fc6d1f3be35f3e78b4d2ae872725c939ed560e
Update find_network_by_name to throw exception when not found

Change-Id: Ib5546f4c45ba269d3f5060d758af798a12e03402
Update README.md and upload_media method in Catalog OM

Change-Id: Ia9ad4fe1eb4c5d19424b4bba861aafb04937184d