Add required LABEL to Dockerfile.konflux #64

Job	Run time
integration-test (v1.29.2, none, 3.10)	26m 11s
integration-test (v1.27.11, none, 3.7)	27m 38s
integration-test (v1.28.7, none, 3.8)	26m 10s
integration-test (v1.29.2, scheduler-plugins, 3.9)	28m 14s
integration-test (v1.27.11, scheduler-plugins, 3.10)	27m 23s
integration-test (v1.28.7, scheduler-plugins, 3.10)	28m 17s
integration-test (v1.29.2, volcano, 3.9)	25m 49s
integration-test (v1.27.11, volcano, 3.10)	25m 51s
integration-test (v1.28.7, volcano, 3.10)	27m 2s
	4h 2m 35s

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