Add label to build #262

Job	Run time
gatekeeper	4s
check-changes	1m 21s
build-sglang-sagemaker-image	2m 35s
build-sglang-ec2-image	2m 24s
set-ec2-test-environment	4s
sglang-ec2-upstream-test	5m 9s
sglang-ec2-local-benchmark-test	3m 51s
set-sagemaker-test-environment	6s
sglang-sagemaker-endpoint-test	9m 56s
sglang-sagemaker-local-benchmark-test	3m 52s
sglang-sagemaker-upstream-test	5m 7s
	34m 29s

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