Cluster: clusterHandleConfigEpochCollision() fixed.
Cluster: clusterHandleConfigEpochCollision() fixed.

New config epochs must always be obtained incrementing the currentEpoch,
that is itself guaranteed to be >= the max configEpoch currently known
to the node.

xuzhezhaozhao/redis_reading,xuzhezhaozhao/redis_reading,HunanTV/redis,himoca/redis,ksarch-saas/redis,HunanTV/redis,maodeyi/redis_lua,jxwr/redis,ksarch-saas/redis,slfs007/mk-redis,louisliangjun/redis,louisliangjun/redis,himoca/redis,ramonsnir/redis,xuzhezhaozhao/redis_reading,maodeyi/redis_lua,ttuna/msot-redis,ttuna/msot-redis,maodeyi/redis_lua,ksarch-saas/redis,darksideofthemoo/redis-histogram,ttuna/msot-redis,ksarch-saas/redis,splitice/redis,MSOpenTech/redis,darksideofthemoo/redis-histogram,splitice/redis,slfs007/mk-redis,ramonsnir/redis,MSOpenTech/redis,ttuna/msot-redis,splitice/redis,spearhead-ea/redis,MSOpenTech/redis,MSOpenTech/redis,ttuna/msot-redis,himoca/redis,MSOpenTech/redis,louisliangjun/redis,splitice/redis,HunanTV/redis,slfs007/mk-redis,Hailei/redis,jxwr/redis,darksideofthemoo/redis-histogram,spearhead-ea/redis,HunanTV/redis,Hailei/redis,Hailei/redis,Hailei/redis,louisliangjun/redis,spearhead-ea/redis,xuzhezhaozhao/redis_reading,ramonsnir/redis,darksideofthemoo/redis-histogram,jxwr/redis