fixes for release pipeline (aarch64)

[sajjaphani]

Currently, the release pipeline is failing because it is falling back to the LTS-2024 channel, where none of the hab* packages exist. To unblock the release pipeline, the fallback channel has been updated to stable.

Note: The hab, hab-studio, hab-backline, and hab-plan-build packages with version 1.6.1178 have been promoted to the stable channel.

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[mwrock]

You actually want the release channel to fall back t oLTS-2024. The "primary" HAB_BLDR_CHANNEL should be a dynamically created channel based on the BUILDKITE_BUILD_ID. As components are built in the pipeline, the they are uploaded to this channel. So core/hab is built and uploaded to that channel and then core/hab-plan-build should get hab from that channel.

I'm looking at https://buildkite.com/chef/habitat-sh-habitat-main-release-habitat/builds/2002 where the release pipeline is failing. For some reason hab-plan-build is not honoring HAB_BLDR_CHANNEL, but I have not looked deeply into this. Anyways, I think that is the problem you want to investigate. If you fall back to stable, then all of the deps will come from stable instead of LTS-2024.

[sajjaphani]

For aarch64, we have core packages in the LTS-2024 channel, and the hab* packages built against them are placed in the stable channel.
We introduced the HAB_REFRESH_CHANNEL to pull core dependencies, and the aarch64 packages in the stable channel are built with these changes.

habitat/components/plan-build/bin/hab-plan-build.sh

Lines 691 to 698 in 9ef672b

	local channel="$HAB_BLDR_CHANNEL"
	if [[ -z "${NO_INSTALL_DEPS:-}" ]]; then
	origin="$(echo "$dep" | cut -d "/" -f 1)"
	if [[ $origin == "core" || $origin == "chef" || $origin == "chef-platform" ]]; then
	channel="$HAB_REFRESH_CHANNEL"
	if [[ $HAB_PREFER_LOCAL_CHEF_DEPS == "false" ]]; then
	IGNORE_LOCAL="--ignore-local"
	fi

It appears that with the introduction of HAB_REFRESH_CHANNEL, the HAB_BLDR_CHANNEL is no longer honored for core packages.

For aarch64, the HAB_REFRESH_CHANNEL is set to LTS-2024 in both the verify and release pipelines to pull dependencies, while the HAB_FALLBACK_CHANNEL is configured to pull the hab, hab-studio, and similar packages from the stable channel. No other packages, except for hab, hab-studio, and related ones, are present in the stable channel.