Test vuln fixes #6

Job	Run time
Build Docker image	1m 39s
Unit tests in ubuntu-20.04	19m 11s
Code linters	2m 4s
Run PEEPS tests	10m 9s
Acceptance tests (basic \|\| basic-raft \|\| (advanced && raft) \|\| networks/typical::raft)	19m 37s
Acceptance tests (basic \|\| basic-istanbul \|\| (advanced && istanbul && !block-heights) \|\| networks/typical::istanbul)	22m 1s
Acceptance tests (basic \|\| basic-istanbul \|\| (advanced && istanbul && !block-heights) \|\| empty-block-period \|\| block-reward \|\| networks/typical::qbft)	20m 48s
Acceptance tests (validator-management && networks/template::istanbul-3plus1)	7m 38s
Acceptance tests (validator-management && networks/template::qbft-3plus1)	8m 8s
Acceptance tests (multitenancy && networks/plugins::raft-multitenancy)	7m 29s
Acceptance tests (migration && networks/template::istanbul-4nodes)	5m 45s
Acceptance tests (migration && networks/template::raft-4nodes)	4m 54s
Acceptance tests (basic \|\| networks/typical::raftmps)	16m 4s
Acceptance tests (basic \|\| networks/typical::istanbulmps)	21m 10s
Acceptance tests (basic \|\| networks/typical::qbftmps)	20m 25s
	3h 7m 2s

Provide feedback