Fix gdb issue and update e2e image

[aledbf]

Fixes #3002 (comment) and updates the troubleshooting guide

The reason why the gdb package is not available is that during the cleanup we were removing the libpython3.6-stdlib package (required dependency)

@ElvinEfendi thank you for pointing this issue

[ElvinEfendi]

/lgtm

thanks for quick fix!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, ElvinEfendi

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:

• OWNERS [ElvinEfendi,aledbf]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[codecov-io]

Codecov Report

Merging #3005 into master will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3005      +/-   ##
==========================================
+ Coverage   47.52%   47.54%   +0.01%     
==========================================
  Files          77       77              
  Lines        5639     5639              
==========================================
+ Hits         2680     2681       +1     
+ Misses       2607     2605       -2     
- Partials      352      353       +1

Impacted Files	Coverage Δ
internal/watch/file_watcher.go	84.61% <0%> (+3.84%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 4019357...fdc9ab2. Read the comment docs.