Virtual-environments: Update kernel version on ubuntu 18.04 images

[ethomson]

Describe the bug
The kernel in the Ubuntu 18.04 images suffers from a kernel bug that prevents .NET Core from running in a container.

It seems that subsequent updates may have fixed this.

Virtual environments affected

• [ ] macOS 10.14
• [ ] Ubuntu 16.04 LTS
• [X] Ubuntu 18.04 LTS
• [ ] Windows Server 2016 R2
• [ ] Windows Server 2019

Expected behavior
.NET Core containers run correctly

Actual behavior
.NET Core container runs fail with "The FileName property should not be a directory unless UseShellExecute is set"

See https://github.community/t5/GitHub-Actions/Docker-build-failure-on-Ubuntu-18-04-host/m-p/33224#M1423

[dasMulli]

Also note that another common error for the same bug is

error MSB6004: The specified task executable location "/" is invalid.

depending on the build that is being run. (one is launching the c# compiler, one is launching msbuild worker nodes for parallel builds)

[rainersigwald]

Status from internal thread:

No ETA as of yet, but:

• It looks like https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1842382 is the duplicate of the Ubuntu bug that has the most traction
• https://bugs.launchpad.net/kernel-sru-workflow/+bug/1846007 is being used as the fix-tracking bug on the Ubuntu side
• https://launchpad.net/ubuntu/+source/linux-azure/ tracks the validation/promotion of the kernel. This is supposed to be fixed in 5.0.0-1022, which is currently proposed (still in testing; not recommended for production systems)

[alepauly]

@rainersigwald Update with kernel version 5.0.0-1022-azure is rolling out now and should be everywhere by the end of the week.
fyi @kaylangan

[alepauly]

This has been deployed for a while now, forgot to update issue