redis-cli: ignore SIGPIPE network errors
redis-cli: ignore SIGPIPE network errors

Closes #2066

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