Fix Erlang CI: Add gen-erl into test's path
Client: erl
Patch: Sergey Yelin

This closes #2290
diff --git a/lib/erl/rebar.config b/lib/erl/rebar.config
index 1b32947..ab2c255 100644
--- a/lib/erl/rebar.config
+++ b/lib/erl/rebar.config
@@ -1,3 +1,11 @@
 {erl_opts, [{platform_define, "^R.*", otp16_or_less}, debug_info]}.
 
-{profiles, [{test, [{deps, [meck]}]}]}.
+{profiles, [
+    {test, [
+        {deps, [meck]},
+        {eunit_tests, [
+            {dir, "test"},
+            {dir, "test/gen-erl"}
+        ]}
+    ]}
+]}.