adding configs for statusBarColorControl and statusBarColors existing workbench.colorCustomizations settings are removed

[thousand]

BUG REPORT:

Environment:

• VSCode Version: 1.18.0
• VsCodeVim Version: 0.10.4
• OS: macOS 10.12.6

What happened:

I enabled the "vim.statusBarColorControl" user preference and added some "vim.statusBarColors" configs. Doing this wiped out my workbench.colorCustomizations for the cursor color.

pre-existing customization:

"workbench.colorCustomizations": {
  "editorCursor.background": "#ff00ff"
}

added for vim:

  "vim.statusBarColorControl": true,
  "vim.statusBarColors": {
    "normal": "#444444",
    "insert": "#226622",
    "visual": "#224466",
    "visualline": "#662244",
    "visualblock": "#224466",
    "replace": "#662222"
  }

new workbench.colorCustomizations:

  "workbench.colorCustomizations": {
    "statusBar.background": "#224466",
    "statusBar.noFolderBackground": "#224466",
    "statusBar.debuggingBackground": "#224466"
  },

What did you expect to happen:
I would expect this to merge the status bar colors into the other color customization settings instead of replacing them.

How to reproduce it:
(see above)

[jpoon]

Sounds like a dupe of #1654

[jpoon]

Fixed with #2122