vscodevim plugin breaks tree indent setting

[kalenpw]

Describe the bug
When I have no enabled extensions I can set "workbench.tree.indent": 20, and naturally that is respected the tree is indented 20 pixels. Upon restart that setting is saved.

If VSCodeVim is my only enabled extension, I can set 20 pixels and then restart the editor upon restart it will be set back to the default (I believe 8 but I could be wrong). The UI still shows 20 pixels, but I can change that to a different number and change it back to 20 and it will work.

To Reproduce
Steps to reproduce the behavior:

1. Enable vscodevim
2. set tree indent to 20 pixels
3. restart vscode
4. tree will not be indented 20 pixels

Expected behavior
I would expect the tree indent to be respected as it is with other plugins.

Screenshots
If applicable, add screenshots to help explain your problem.
If remapping-related, please attach log output: https://github.com/VSCodeVim/Vim#debugging-remappings.
Attached screenshots of tree indent where no settings were changed besides enabling vscodevim and restarting

Environment (please complete the following information):

• Extension (VsCodeVim) version: 1.1.0
  Version: 1.31.1
  Commit: 1b8e8302e405050205e69b59abb3559592bb9e60
  Date: 2019-02-12T02:19:29.629Z
  Electron: 3.1.2
  Chrome: 66.0.3359.181
  Node.js: 10.2.0
  V8: 6.6.346.32
  OS: Linux x64 4.15.0-46-generic
• OS: Xubuntu 18.04

Additional context
None I can think of but if additional details are needed let me know and I'll get this issue updated asap.

[kalenpw]

After posting this I realized it is a duplicate of #3561