Update step/cli to make the code buildable

Gopkg.lock

@@ -43,20 +43,6 @@
   pruneopts = "UT"
   revision = "06c8688daad7faa9da5a0c2f163a3d14aac986ca"
 
-[[projects]]
-  digest = "1:d2754cafcab0d22c13541618a8029a70a8959eb3525ff201fe971637e2274cd0"
-  name = "github.com/google/go-cmp"
-  packages = [
-    "cmp",
-    "cmp/cmpopts",
-    "cmp/internal/diff",
-    "cmp/internal/function",
-    "cmp/internal/value",
-  ]
-  pruneopts = "UT"
-  revision = "3af367b6b30c263d47e8895973edcca9a49cf029"
-  version = "v0.2.0"
-
 [[projects]]
   branch = "master"
   digest = "1:750e747d0aad97b79f4a4e00034bae415c2ea793fd9e61438d966ee9c79579bf"
@@ -144,7 +130,7 @@
 
 [[projects]]
   branch = "ca-commands"
-  digest = "1:e81a129363c3570e218497e61c2c71c66e99b8f05be45eb8e8a32612f3ad1d7b"
+  digest = "1:0cf4497cacfc42b012fa5a4100bf1b397473c1eab7ac89be9117584f0be58165"
   name = "github.com/smallstep/cli"
   packages = [
     "crypto/keys",
@@ -158,7 +144,7 @@
     "utils",
   ]
   pruneopts = "UT"
-  revision = "802214a46ad6aad96b741acebc85de63d03d00b5"
+  revision = "b4ef654d4698241bbec109853455a5c328a6c217"
 
 [[projects]]
   branch = "master"