Trailing comma breaks tilt

[fiunchinho]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

With the trailing comma tilt complains with an error when trying to start

make tilt-up
./scripts/kind-with-registry.sh
cluster already exists, moving on
EXP_CLUSTER_RESOURCE_SET=true EXP_AKS=true EXP_MACHINE_POOL=true tilt up
Tilt started on http://localhost:10350/
v0.20.4, built 2021-05-24

(space) to open the browser
(s) to stream logs (--stream=true)
(t) to open legacy terminal mode (--legacy=true)
(ctrl-c) to exit
Opening browser: http://localhost:10350/
Opening in existing browser session.
Tilt started on http://localhost:10350/
v0.20.4, built 2021-05-24

Initial Build • (Tiltfile)
Beginning Tiltfile execution
ERROR: Traceback (most recent call last):
  /home/jose/dev/src/github.com/kubernetes-sigs/cluster-api-provider-azure/Tiltfile:28:26: in <toplevel>
  <builtin>: in read_json
Error: error parsing JSON from tilt-settings.json: invalid character '}' looking for beginning of object key string
^C

I'm using Tilt version

v0.20.4, built 2021-05-24

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

NONE

[k8s-ci-robot]

Hi @fiunchinho. Thanks for your PR.

I'm waiting for a kubernetes-sigs member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[nader-ziada]

/ok-to-test

[nader-ziada]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nader-ziada

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