Declare some new default gems dependencies

Author: byroot

Gemfile

@@ -11,6 +11,7 @@ gem "rake-compiler"
 gem "rubocop"
 gem "rubocop-minitest"
 gem "toxiproxy"
+gem "benchmark"
 
 group :benchmark do
   gem "benchmark-ips"

Gemfile.lock

@@ -8,13 +8,14 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
+    benchmark (0.4.0)
     benchmark-ips (2.14.0)
     byebug (11.1.3)
     connection_pool (2.4.1)
     hiredis (0.6.3)
     hiredis (0.6.3-java)
-    json (2.7.1)
-    json (2.7.1-java)
+    json (2.9.0)
+    json (2.9.0-java)
     megatest (0.2.0)
     parallel (1.24.0)
     parser (3.3.0.5)
@@ -55,6 +56,7 @@ PLATFORMS
   x86_64-linux
 
 DEPENDENCIES
+  benchmark
   benchmark-ips
   byebug
   hiredis