Add template for building image for the Oracle Cloud provider

[jdeathe]

https://docs.oracle.com/en-us/iaas/Content/Compute/References/bringyourownimage.htm

https://docs.oracle.com/en-us/iaas/Content/Compute/Tasks/importingcustomimagelinux.htm#Importing_Custom_Linux_Images

https://docs.oracle.com/en-us/iaas/Content/Compute/Tasks/configuringntpservice.htm#Configuring_the_Oracle_Cloud_Infrastructure_NTP_Service_for_an_Instance

https://docs.oracle.com/en-us/iaas/Content/Compute/Tasks/enablingserialconsoleaccess.htm#Enabling_Serial_Console_Access_for_Imported_Linux_Images