switch ct provider to use external provider behavior

bootstrap/bootstrap

@@ -46,7 +46,7 @@ main(Args) ->
                           false -> undefined
                       end,
 
-    os:cmd("./bootstrap/rebar get-deps compile -r"),
+    os:cmd("./bootstrap/rebar get-deps compile"),
 
     %% Compile all src/*.erl to ebin
     %% To not accidentally try to compile files like Mac OS X resource forks,

src/rebar.app.src

@@ -14,6 +14,7 @@
                   syntax_tools,
                   tools,
                   erlware_commons,
+                  providers,
                   relx,
                   inets]},
   {env, [

src/rebar_prv_common_test.erl

@@ -3,11 +3,11 @@
 
 -module(rebar_prv_common_test).
 
--behaviour(rebar_provider).
+-behaviour(provider).
 
 -export([init/1,
-         format_error/2,
-         do/1]).
+         do/1,
+         format_error/2]).
 
 -include("rebar.hrl").