fix staging bucket variations

Signed-off-by: Davanum Srinivas <[email protected]>

Author: dims

kubetest2-ec2/config/ubuntu2204.yaml

@@ -142,12 +142,11 @@ write_files:
       chmod +x /usr/local/bin/ecr-credential-provider
 
       if [[ "{{STAGING_BUCKET}}" =~ ^s3.*  ]]; then
-        aws s3 cp s3://{{STAGING_BUCKET}}/{{STAGING_VERSION}}/kubernetes-server-linux-$ARCH.tar.gz kubernetes-server-linux-$ARCH.tar.gz --no-sign-request
+        aws s3 cp {{STAGING_BUCKET}}/{{STAGING_VERSION}}/kubernetes-server-linux-$ARCH.tar.gz kubernetes-server-linux-$ARCH.tar.gz --no-sign-request
       elif [[ "{{STAGING_BUCKET}}" =~ ^https.*  ]]; then
         curl -sSLo kubernetes-server-linux-$ARCH.tar.gz --fail --retry 5 "{{STAGING_BUCKET}}/{{STAGING_VERSION}}/kubernetes-server-linux-$ARCH.tar.gz"
       else
-        echo "unsupported staging location: $STAGING_LOCATION"
-        exit 1
+        aws s3 cp s3://{{STAGING_BUCKET}}/{{STAGING_VERSION}}/kubernetes-server-linux-$ARCH.tar.gz kubernetes-server-linux-$ARCH.tar.gz --no-sign-request
       fi
 
       tar -xvzf kubernetes-server-linux-$ARCH.tar.gz