redis-benchmark: add auth option
redis-benchmark: add auth option

Closes #1097

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