add RELEASE_NOTE generation script #909

Job	Run time
cleanup-runs	6s
build (amd64)	15s
split-test-files	16s
install-tparse	14s
test-upgrade-name	5s
tests (00)	19s
test-integration-multi-node (00)	18s
tests (01)	23s
test-integration (00)	19s
test-integration-multi-node (01)	17s
tests (02)	14s
test-integration (01)	25s
test-integration-multi-node (02)	14s
tests (03)	18s
test-integration (02)	19s
test-integration-multi-node (03)	18s
test-integration (03)	16s
test_integration_multi_node_report	8s
test-localnet-blocks	2m 56s
upload-coverage-report	8s
test-integration-report	4s
	7m 52s

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