[unc-ebike] add w2 and w2test subgroups (#152)

@mattwigway we have now enabled the "token" screen (thanks to @JGreenlee) so you can generate wave2 tokens from the admin dashboard.

Author: mattwigway

configs/unc-ebike.nrel-op.json

@@ -10,7 +10,9 @@
     "autogen": false,
     "subgroups": [
       "test",
-      "default"
+      "default",
+      "w2test",
+      "w2"
     ],
     "suspended_subgroups": [
       "default",