Add conditional config includes for gitlab and incubator directories

Uses the main Git configuration file.

References:

  * https://github.com/blog/2360-git-2-13-has-been-released#conditional-configuration

GH-97

snowblocks/git/gitconfig

@@ -22,14 +22,15 @@
 [includeIf "gitdir:~/code/github/"]
   path = ~/.gitconfig_auth
 
+[includeIf "gitdir:~/code/gitlab/"]
+  path = ~/.gitconfig_auth
+
+[includeIf "gitdir:~/code/incubator/"]
+  path = ~/.gitconfig_auth
+
 [includeIf "gitdir:~/.igloo/"]
   path = ~/.gitconfig_auth
 
-  # Includes sensible job authentication data:
-  #   - user.name <USERNAME>
-  #   - user.email <EMAIL>
-  #   - user.signingkey <SIGNINGKEY>
-  #   - user.useconfigonly true
 [includeIf "gitdir:~/code/job/"]
   path = ~/.gitconfig_auth_job