geth: add new update transitions helper utility #1115

Job	Run time
Build Docker image	1m 55s
Code linters	2m 16s
Unit tests in ubuntu-20.04	20m 25s
Run PEEPS tests	8m 34s
Acceptance tests (basic \|\| basic-raft \|\| (advanced && raft) \|\| networks/typical::raft)	19m 36s
Acceptance tests (basic \|\| basic-istanbul \|\| (advanced && istanbul && !block-heights) \|\| networks/typical::istanbul)	21m 48s
Acceptance tests (basic \|\| basic-istanbul \|\| (advanced && istanbul && !block-heights) \|\| empty-block-period \|\| block-reward \|\| networks/typical::qbft)	20m 45s
Acceptance tests (validator-management && networks/template::istanbul-3plus1)	7m 39s
Acceptance tests (validator-management && networks/template::qbft-3plus1)	7m 40s
Acceptance tests (multitenancy && networks/plugins::raft-multitenancy)	31s
Acceptance tests (migration && networks/template::istanbul-4nodes)	5m 10s
Acceptance tests (migration && networks/template::raft-4nodes)	4m 43s
Acceptance tests (basic \|\| networks/typical::raftmps)	15m 17s
Acceptance tests (basic \|\| networks/typical::istanbulmps)	21m 20s
Acceptance tests (basic \|\| networks/typical::qbftmps)	20m 33s
	2h 58m 12s

Provide feedback