pull unzip in proxygen/deps.sh
pull unzip in proxygen/deps.sh

Summary: some ubuntu release does not include unzip by default. let's check it in deps.sh.

Reviewed By: viswanathgs

Differential Revision: D2805058

fb-gh-sync-id: 3c24af67180ce00ff1f9ed739bfcc10d0372e540

Orvid/proxygen,Orvid/proxygen,Orvid/proxygen,Orvid/proxygen