add RELEASE_NOTE generation script #910

Job	Run time
build (amd64)	14s
install-tparse	10s
cleanup-runs	5s
split-test-files	13s
test-upgrade-name	3s
test-integration-multi-node (00)	20s
test-integration-multi-node (01)	18s
tests (00)	20s
test-integration (00)	20s
test-integration-multi-node (02)	22s
tests (01)	25s
test-integration (01)	21s
tests (02)	14s
test-integration-multi-node (03)	26s
test-integration (02)	18s
tests (03)	18s
test-integration (03)	27s
upload-coverage-report	7s
test-localnet-blocks	2m 50s
test_integration_multi_node_report	8s
test-integration-report	6s
	8m 5s

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