Force arch for pulling bundle

[mclasmeier]

The recent change in the docker building + using a new format (OCI instead of Docker), caused a breakage for roxie -- it was not able to pull the images anymore:

❯ MAIN_IMAGE_TAG=4.11.x-114-g3749e29c22 ./roxie deploy operator 
00:00 Running with a controlling terminal.
00:02 🚀 ACS Deployer initialized
00:02 roxctl version: 4.11.x-94-g682dc835b2
00:02 Looking up main image tag
00:02 Using MAIN_IMAGE_TAG from environment: 4.11.x-114-g3749e29c22
00:02 Preparing and verifying Docker credentials...
00:02 REGISTRY_USERNAME/REGISTRY_PASSWORD unset. Trying to obtain Docker credentials from config file: /Users/mclasmeier/.docker/config.json
00:03 Successfully verified credentials for quay.io (repository: rhacs-eng/main)
00:03 Docker credentials verified successfully
00:03 Initiating deployment of Operator
00:03 🚀 Deploying Operator only...
00:05 Missing CRDs detected (centrals.platform.stackrox.io, securedclusters.platform.stackrox.io, securitypolicies.config.stackrox.io)
00:05 Fetching bundle quay.io/rhacs-eng/stackrox-operator-bundle:v4.11.0-114-g3749e29c22
00:05 Created temporary directory: /var/folders/mt/4vkmn4ps3dq_ylx6drvnl1ph0000gn/T/stackrox-operator-bundle-1817998613
00:05 Using podman to extract bundle
00:05 Pulling operator bundle image...
00:06 Command output:
00:06 Trying to pull quay.io/rhacs-eng/stackrox-operator-bundle:v4.11.0-114-g3749e29c22...
Error: unable to copy from source docker://quay.io/rhacs-eng/stackrox-operator-bundle:v4.11.0-114-g3749e29c22: choosing an image from manifest list docker://quay.io/rhacs-eng/stackrox-operator-bundle:v4.11.0-114-g3749e29c22: no image found in image index for architecture "arm64", variant "v8", OS "linux"

Error: deployment failed: failed to ensure CRDs installed: failed to pull bundle image: exit status 125

This PR makes it so that the bundle is pulled for arch amd64 -- also on e.g. arm64. Let me quote from the commit:

+               // Force amd64 platform for pulling the operator bundle image.
+               // This is
+               //   1. fine because bundle images only contain platform-agnostic YAML files and
+               //   2. required to pull the image after the recent changes to the operator bundle image build process.
+               pullCmd := exec.CommandContext(ctx, containerTool, "pull", "--platform", "linux/amd64", bundleImage)

Now, deploying works again:

 MAIN_IMAGE_TAG=4.11.x-114-g3749e29c22 ./roxie deploy operator
00:00 Running with a controlling terminal.
00:00 🚀 ACS Deployer initialized
00:00 roxctl version: 4.11.x-94-g682dc835b2
00:00 Looking up main image tag
00:00 Using MAIN_IMAGE_TAG from environment: 4.11.x-114-g3749e29c22
00:00 Preparing and verifying Docker credentials...
00:00 REGISTRY_USERNAME/REGISTRY_PASSWORD unset. Trying to obtain Docker credentials from config file: /Users/mclasmeier/.docker/config.json
00:01 Successfully verified credentials for quay.io (repository: rhacs-eng/main)
00:01 Docker credentials verified successfully
00:01 Initiating deployment of Operator
00:01 🚀 Deploying Operator only...
00:03 Missing CRDs detected (centrals.platform.stackrox.io, securedclusters.platform.stackrox.io, securitypolicies.config.stackrox.io)
00:03 Fetching bundle quay.io/rhacs-eng/stackrox-operator-bundle:v4.11.0-114-g3749e29c22
00:03 Created temporary directory: /var/folders/mt/4vkmn4ps3dq_ylx6drvnl1ph0000gn/T/stackrox-operator-bundle-1206150949
00:03 Using podman to extract bundle
00:03 Pulling operator bundle image...
00:07 ✓ Bundle extracted to: /var/folders/mt/4vkmn4ps3dq_ylx6drvnl1ph0000gn/T/stackrox-operator-bundle-1206150949
00:07 Applying 3 CRD(s) to cluster
00:09 ✓ Successfully applied CRD config.stackrox.io_securitypolicies.yaml
00:10 ✓ Successfully applied CRD platform.stackrox.io_centrals.yaml
00:12 ✓ Successfully applied CRD platform.stackrox.io_securedclusters.yaml
00:12 Cleaned up CRD bundle directory: /var/folders/mt/4vkmn4ps3dq_ylx6drvnl1ph0000gn/T/stackrox-operator-bundle-1206150949
00:13 Operator tag: 4.11.0-114-g3749e29c22
00:14 Created temporary directory: /var/folders/mt/4vkmn4ps3dq_ylx6drvnl1ph0000gn/T/stackrox-operator-bundle-312725600
00:14 Using podman to extract bundle
00:14 Bundle image already available locally, skipping pull
00:15 ✓ Bundle extracted to: /var/folders/mt/4vkmn4ps3dq_ylx6drvnl1ph0000gn/T/stackrox-operator-bundle-312725600
00:15 Bundle image: quay.io/rhacs-eng/stackrox-operator-bundle:v4.11.0-114-g3749e29c22
00:15 Applying 3 CRD(s) to cluster
00:16 ✓ Successfully applied CRD config.stackrox.io_securitypolicies.yaml
00:17 ✓ Successfully applied CRD platform.stackrox.io_centrals.yaml
00:18 ✓ Successfully applied CRD platform.stackrox.io_securedclusters.yaml
00:18 🔍 Parsing ClusterServiceVersion deployment specification
00:18 📋 Operator deployment plan:
00:18   • Namespace: rhacs-operator-system
00:18   • ServiceAccount: rhacs-operator-controller-manager
00:29 ⏳ Waiting for operator deployment to become ready...
00:42 ✓ Operator deployment is ready (1 replicas)
00:42 🎉 Operator deployment completed successfully!
00:42 Cleaned up operator bundle directory: /var/folders/mt/4vkmn4ps3dq_ylx6drvnl1ph0000gn/T/stackrox-operator-bundle-312725600
00:42 ✓ Operator deployed successfully
00:42 You can now deploy Central or SecuredCluster components separately
00:42 🎉 Deployment complete!

roxie on  mc/docker-bundle-oci-arch [$!?] via 🐹 v1.25.0 on ☁️  mclasmei@redhat.com took 43s 
❯ kc -n rhacs-operator-system get pods
NAME                                                 READY   STATUS    RESTARTS   AGE
rhacs-operator-controller-manager-5bcb7b565b-2hwmd   1/1     Running   0          89s