Cluster: bypass data_age check for manual failovers.
Cluster: bypass data_age check for manual failovers.

Automatic failovers only happen in Redis Cluster if the slave trying to
be elected was disconnected from its master for no more than 10 times
the node-timeout value. However there should be no such a check for
manual failovers, since these are initiated by the sysadmin that, in
theory, knows what she is doing when a slave is selected to be promoted.

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