update arcconfig key:values for new phabricator api

Summary:
https://secure.phabricator.com/book/phabricator/article/arcanist_new_project/
the previous values here are no longer valid and will fail when used
with git-phab
Depends on D6154

Reviewers: cedric, raster, bu5hm4n

Reviewed By: bu5hm4n

Subscribers: devilhorns

Tags: #enlightenment-git

Differential Revision: https://phab.enlightenment.org/D6155

.arcconfig

@@ -1,4 +1,6 @@
 {
-  "project_id" : "enlightenment",
-  "conduit_uri" : "https://phab.enlightenment.org/"
+  "project_id" : "enlightenment-git",
+  "projects" : "enlightenment-git",
+  "conduit_uri" : "https://phab.enlightenment.org/",
+  "phabricator.uri" : "https://phab.enlightenment.org/"
 }