genesis: use env to configure pre-genesis chain-id #961

Job	Run time
check-packages	5m 24s
build-binaries	9m 59s
build-wasm (wasm, build-wasm-scripts, wasm/tx_.wasm wasm/vp_.wasm wasm/checksums.json )	3m 41s
changelog	17s
build-wasm (wasm-for-tests, build-wasm-tests-scripts, wasm_for_tests/*.wasm)	3m 2s
lints	5m 31s
rust-docs	7m 5s
test-integration	18m 9s
check-benchmarks	12m 48s
test-wasm	7m 12s
test-unit	10m 51s
test-e2e-with-device-automation	9m 41s
test-e2e (0)	22m 25s
test-e2e (1)	17m 40s
test-e2e (2)	18m 20s
test-e2e (3)	19m 14s
test-e2e (4)	22m 31s
upload-coverage	27s
	3h 14m 17s

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