[Membership] Monitor 10 silos by default instead of 3 #3138

Job	Run time
Redis provider tests (Redis)	4m 36s
Build (ubuntu-latest)	2m 20s
Consul provider tests (Consul)	5m 21s
Cassandra provider tests (Cassandra, 3.11)	3m 38s
AWS DynamoDB provider tests (DynamoDB)	5m 29s
Cassandra provider tests (Cassandra, 4.0)	4m 26s
Cassandra provider tests (Cassandra, 4.1)	4m 20s
MariaDB/MySQL provider tests (MySql)	2m 30s
PostgreSQL provider tests (PostgreSql)	2m 58s
Build (windows-latest)	6m 16s
Cassandra provider tests (Cassandra, 5.0)	4m 28s
Microsoft SQL Server provider tests (SqlServer)	2m 50s
ZooKeeper provider tests (ZooKeeper)	2m 30s
Azure Cosmos DB provider tests	0s
Azure Storage provider tests	0s
	51m 42s

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