Fix elli rebar.config and update setup to conventions

frameworks/Erlang/cowboy/benchmark_config.json

@@ -2,7 +2,7 @@
   "framework": "cowboy",
   "tests": [{
     "default": {
-      "setup_file": "setup_erlang",
+      "setup_file": "setup",
       "json_url": "/json",
       "db_url": "/db",
       "query_url": "/query?queries=",

frameworks/Erlang/elli/benchmark_config.json

@@ -2,7 +2,7 @@
   "framework": "elli",
   "tests": [{
     "default": {
-      "setup_file": "setup_erlang",
+      "setup_file": "setup",
       "json_url": "/json",
       "db_url": "/db",
       "query_url": "/query?queries=",

frameworks/Erlang/elli/rebar.config

@@ -2,5 +2,5 @@
  [
   {jiffy, ".*", {git, "https://github.com/davisp/jiffy.git", {tag, "0.13.3"}}},
   {emysql, ".*", {git, "https://github.com/Eonblast/Emysql.git"}},
-  {elli, "", {git, "git://github.com/knutin/elli.git", {tag, "v1.0.3"}}
+  {elli, "", {git, "git://github.com/knutin/elli.git", {tag, "v1.0.3"}}}
  ]}.