Auto update submodules

[abelgladstone]

Issue Type: Bug

Git submodule information (branch names, modified files) do not auto update in the source control view.
For example: If you are working on a branch and switched to a new branch in both the main repo and a submodule. The view still shows branch information that is from the old branch. The same can be observed when you commit changes, The source control view is not updated.

You can fix this by clicking on the refresh button.

VS Code version: Code 1.25.1 (1dfc5e5, 2018-07-11T15:43:53.668Z)
OS version: Windows_NT x64 6.1.7601

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-4800MQ CPU @ 2.70GHz (8 x 2693)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: disabled_software video_decode: enabled video_encode: enabled vpx_decode: unavailable_software webgl: enabled webgl2: enabled
Memory (System)	31.62GB (22.39GB free)
Process Argv	c:\program files\microsoft vs code\code.exe
Screen Reader	no
VM	0%

Extensions (13)

Extension	Author (truncated)	Version
vscode-eclipse-keybindings	alp	0.9.8
file-templates	brp	1.2.0
gitlens	eam	8.5.4
vs-code-xml-format	fab	0.1.5
gc-excelviewer	Gra	2.1.25
python	ms-	2018.7.1
cpptools	ms-	0.17.7
material-icon-theme	PKi	3.5.2
ruby	reb	0.20.0
java	red	0.29.0
cmake	twx	0.0.17
shell-launcher	Tyr	0.2.0
cmake-tools	vec	1.1.1

(1 theme extensions excluded)

[vscodebot]

(Experimental duplicate detection)
Thanks for submitting this issue. Please also check if it is already covered by an existing one, like:

• Git submodule command support (#52700)
• Preserve open files list when switching branches (#35307)
• git remote branch sync (#52571)
• Closing absent file panes on change of git branch should restore when branch is switched back (#30760)
• Differentiate between submodules and normal repos (#43951)

[joaomoreno]

Dependent on #3025, duplicate of #42821