Fix high water mark memory usage on Cinder Volume and Backup services andreduce peak memory usage.

Split off Ceph related container images

This change releases an update on the default tripleo_containers jinjatemplate, splitting off the Ceph related container images.With this new approach pulling the ceph containers is optional, and canbe avoided by setting theceph_images boolean to False.e.g., passing something like the following:

parameter_defaults:ContainerImagePrepare:-push_destination:trueset:name_prefix:openstack-name_suffix:''namespace:quay.io/tripleomasterneutron_driver:ovnrhel_containers:falsetag:current-tripleoceph_images:falseContainerImagePrepareDebug:trueContainerImageRegistryCredentials:{}

avoid the ceph containers being pulled in the undercloud.To make this possible, a new jinja template processing approachhas been introduced, and a template basedir parameter (requiredby the jinja loader) has been added to the BaseImageManager.Finallym, two moreceph_ prefixed containers, required to deploythe Ceph Ingress daemon are added, and they are supposed to matchthe tripleo-heat-templatesOS::TripleO::Services::CephIngressservice.The Ingress daemon doesn’t use the Ceph daemon container, hencetripleo container image prepare should be executed to pull thenew container images/tags in the undercloud as made for the CephDashboard and the regular Ceph image.

The scriptstripleo-mount-image andtripleo-unmount-image will mountthe contents of an overcloud image file using qemu-nbd, making it availablefor chroot, or other read/write image operations. The scripts handlepartition image (overcloud-full.qcow2) as well as the whole-disk image(overcloud-hardened-uefi-full.qcow2) with its multiple LVM volume mountpoints.

The compatibility wrapper for the deprecated field:mac in nodes JSON(instackenv.json) has been removed. Themac field is no longersupported as it was replaced byports in the Stein release.

The DeployArtifactURL(s) server is no longer makes any use of Swift when using built-in scripts to upload artifacts. The oldupload-swift-artifacts file is now a symlink pointed to the updatedupload-artifacts script. While the file has changed, the API remains the same. The symlink will ensure that legacy automation remains functional while moving over to the new script. The symlink will be removed in a future release.

Removed skopeo based container image uploader. This has been deprecatedsince stein and does not work with our current registry implementation.