use the effective deps dir instead of hardcoding "deps"

suggested by @tuncer

src/rebar_ct.erl

@@ -210,7 +210,7 @@ make_cmd(TestDir, RawLogDir, Config) ->
     CodeDirs = [io_lib:format("\"~s\"", [Dir]) ||
                    Dir <- [EbinDir|NonLibCodeDirs]],
     CodePathString = string:join(CodeDirs, " "),
-    Cmd = case get_ct_specs(Cwd) of
+    Cmd = case get_ct_specs(Config, Cwd) of
               undefined ->
                   ?FMT("~s"
                        " -pa ~s"
@@ -260,8 +260,8 @@ build_name(Config) ->
 get_extra_params(Config) ->
     rebar_config:get_local(Config, ct_extra_params, "").
 
-get_ct_specs(Cwd) ->
-    case collect_glob(Cwd, ".*\.test\.spec\$") of
+get_ct_specs(Config, Cwd) ->
+    case collect_glob(Config, Cwd, ".*\.test\.spec\$") of
         [] -> undefined;
         [Spec] ->
             " -spec " ++ Spec;
@@ -275,7 +275,7 @@ get_cover_config(Config, Cwd) ->
         false ->
             "";
         true ->
-            case collect_glob(Cwd, ".*cover\.spec\$") of
+            case collect_glob(Config, Cwd, ".*cover\.spec\$") of
                 [] ->
                     ?DEBUG("No cover spec found: ~s~n", [Cwd]),
                     "";
@@ -287,14 +287,15 @@ get_cover_config(Config, Cwd) ->
             end
     end.
 
-collect_glob(Cwd, Glob) ->
+collect_glob(Config, Cwd, Glob) ->
+    {true, Deps} = rebar_deps:get_deps_dir(Config),
     CwdParts = filename:split(Cwd),
     filelib:fold_files(Cwd, Glob, true, fun(F, Acc) ->
         %% Ignore any specs under the deps/ directory. Do this pulling
         %% the dirname off the F and then splitting it into a list.
         Parts = filename:split(filename:dirname(F)),
         Parts2 = remove_common_prefix(Parts, CwdParts),
-        case lists:member("deps", Parts2) of
+        case lists:member(Deps, Parts2) of
             true ->
                 Acc;                % There is a directory named "deps" in path
             false ->

src/rebar_deps.erl

@@ -40,6 +40,7 @@
 
 %% for internal use only
 -export([info/2]).
+-export([get_deps_dir/1]).
 
 -record(dep, { dir,
                app,