pool: implemented Role Stringer interface #3865

Job	Run time
run-tests-ce (1.20, 1.10, false, false)	4m 18s
run-tests-ce (1.20, 2.8, false, false)	4m 16s
testing_mac_os (1.20, macos-12, brew)	5m 53s
run-tests-ce (1.20, 2.10, false, false)	4m 42s
testing_mac_os (1.20, macos-12, 1.10.15)	4m 32s
testing_mac_os (1.20, macos-14, brew)	3m 37s
run-tests-ce (1.20, master, false, false)	4m 27s
testing_mac_os (stable, macos-12, brew)	5m 32s
run-tests-ce (stable, 1.10, false, false)	4m 21s
testing_mac_os (stable, macos-12, 1.10.15)	6m 12s
testing_mac_os (stable, macos-14, brew)	4m 8s
run-tests-ce (stable, 2.8, false, false)	4m 19s
run-tests-ce (stable, 2.10, false, false)	4m 49s
run-tests-ce (stable, master, false, false)	4m 40s
run-tests-ce (master, true, 1.20)	6m 13s
run-tests-ce (master, true, 1.20, false)	4m 34s
	1h 16m 33s

Provide feedback