Parallel commands in composite command seem to be run sequentially

[rm3l]

/kind bug
/area devfile-spec

What versions of software are you using?

Operating System:
Fedora 37, kernel 6.2.7-200.fc37.x86_64

Output of odo version:
odo v3.8.0 (47234b9)

odo v3.8.0 (47234b94b)

Server: https://0.0.0.0:6443
Kubernetes: v1.26.2

How did you run odo exactly?

I ran into this issue when trying to use odo deploy with a parallel composite command (applying several Kubernetes components and running exec commands in parallel).
Here is a much simpler Devfile to reproduce the issue.

odo init \
  --name my-component-with-parallel-commands \
  --devfile-path https://gist.githubusercontent.com/rm3l/5691e926a4cfe37e369d93695187bdd6/raw/95abc768e83bd83e7acda035a6053f57b20f4939/devfile-with-parallel-commands.yaml

odo dev

Actual behavior

From the logs, it looks like the commands are running sequentially. We also have the same issues with apply commands.

 •  Waiting for Kubernetes resources  ...
 ⚠  Pod is Pending
 ✓  Pod is Running
 ✓  Syncing files into the container [70ms]
 ✓  Building your application in container (command: exec-1) [5s]
 ✓  Building your application in container (command: exec-2) [27ms]
 ✓  Building your application in container (command: exec-3) [38ms]
 •  Executing the application (command: run-1)  ...
 ✓  Finished executing the application (command: run-1) [5s]
 •  Executing the application (command: run-2)  ...
 ✓  Finished executing the application (command: run-2) [150ms]
 •  Executing the application (command: run-3)  ...
 ✓  Finished executing the application (command: run-3) [133ms]

Expected behavior

Per the Devfile spec, parallel can be used to run the commands in parallel. So we should make sure to honor that.
I guess it was handled at some point in the past because I saw it being checked in the code. After a very first look, the issue seems to be here: https://github.com/redhat-developer/odo/blob/main/pkg/libdevfile/command.go#L32-L35
This is why I am reporting this as a bug, and not a feature request/user story.

Any logs, error output, etc?

[github-actions]

A friendly reminder that this issue had no activity for 90 days. Stale issues will be closed after an additional 30 days of inactivity.

[rm3l]

/remove-lifecycle stale
/lifecycle active