fix the expected arch suffix for 'kmt-dockers' directory (#24347)

.gitlab/kernel_matrix_testing/system_probe.yml

@@ -5,7 +5,7 @@ upload_dependencies_sysprobe_x64:
   needs: ["pull_test_dockers_x64"]
   rules: !reference [.on_system_probe_or_e2e_changes_or_manual]
   variables:
-    ARCH: amd64
+    ARCH: x86_64
     INSTANCE_TYPE: m5d.metal
     TEST_COMPONENT: system-probe
 
@@ -43,7 +43,7 @@ upload_dependencies_sysprobe_arm64:
 pull_test_dockers_x64:
   extends: .pull_test_dockers
   variables:
-    ARCH: amd64
+    ARCH: x86_64
 
 pull_test_dockers_arm64:
   extends: .pull_test_dockers

tasks/system_probe.py

@@ -1767,6 +1767,10 @@ def save_test_dockers(ctx, output_dir, arch, use_crane=False):
     if is_windows:
         return
 
+    # crane does not accept 'x86_64' as a valid architecture
+    if arch == "x86_64":
+        arch = "amd64"
+
     # only download images not present in preprepared vm disk
     resp = requests.get('https://dd-agent-omnibus.s3.amazonaws.com/kernel-version-testing/rootfs/master/docker.ls')
     docker_ls = {line for line in resp.text.split('\n') if line.strip()}