Add missing license header #1156

Job	Run time
build-dse (jdk8, LifecycleIT)	12m 56s
build-dse (jdk8, KeepAliveIT)	12m 48s
build-dse (jdk8, NonDestructiveOpsIT)	16m 52s
build-dse (jdk8, DestructiveOpsIT)	9m 34s
build-oss (3.11, LifecycleIT)	5m 58s
build-dse (jdk8, DSESpecificIT)	10m 25s
build-oss (3.11, KeepAliveIT)	5m 22s
build-dse (ubi, LifecycleIT)	11m 7s
build-oss (3.11, NonDestructiveOpsIT)	12m 21s
build-dse (ubi, KeepAliveIT)	9m 7s
build-oss (3.11, DestructiveOpsIT)	7m 10s
build-dse7	4m 25s
build-dse (ubi, NonDestructiveOpsIT)	14m 39s
build-oss (4.0, LifecycleIT)	9m 54s
build-oss (4.0, KeepAliveIT)	7m 32s
build-dse (ubi, DestructiveOpsIT)	9m 2s
build-oss (4.0, NonDestructiveOpsIT)	12m 48s
build-dse (ubi, DSESpecificIT)	5m 37s
build-oss (4.0, DestructiveOpsIT)	6m 19s
build-oss (4.1, LifecycleIT)	11m 25s
build-oss (4.1, KeepAliveIT)	6m 25s
build-oss (4.1, NonDestructiveOpsIT)	14m 14s
build-oss (4.1, DestructiveOpsIT)	5m 19s
build-oss (3.11_ubi, LifecycleIT)	7m 27s
build-oss (3.11_ubi, KeepAliveIT)	7m 5s
build-oss (3.11_ubi, NonDestructiveOpsIT)	14m 39s
build-oss (3.11_ubi, DestructiveOpsIT)	7m 11s
build-oss (4.0_ubi, LifecycleIT)	8m 52s
build-oss (4.0_ubi, KeepAliveIT)	7m 2s
build-oss (4.0_ubi, NonDestructiveOpsIT)	13m 39s
build-oss (4.0_ubi, DestructiveOpsIT)	6m 14s
build-oss (4.1_ubi, LifecycleIT)	11m 38s
build-oss (4.1_ubi, KeepAliveIT)	7m 34s
build-oss (4.1_ubi, NonDestructiveOpsIT)	14m 47s
build-oss (4.1_ubi, DestructiveOpsIT)	16m 5s
Publish DSE 6.8 Ubuntu image	0s
Publish DSE 6.8 UBI 8 image	0s
Publish ${{ matrix.cassandra-version }} Cassandra image	0s
	5h 43m 32s

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