Update to tagged dep for release

Author: martinsumner

rebar.config

@@ -9,7 +9,7 @@
 {xref_checks,[undefined_function_calls,undefined_functions,locals_not_used]}.
 
 {deps, [
-        {riak_core, ".*", {git, "git://github.com/basho/riak_core.git", {branch, "develop-3.0"}}}
+        {riak_core, ".*", {git, "git://github.com/basho/riak_core.git", {tag, "riak_kv-3.0.2"}}}
        ]}.
 
 {plugins, [{eqc_rebar, {git, "https://github.com/Quviq/eqc-rebar", {branch, "master"}}}]}.