Update secrets instructions with `faas-cli secret` about workshop HOT 12 CLOSED

Derek add label: help wanted

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I will take this

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@ivanayov not sure if it makes sense to make the PR against the kubernetes-preview. They seem to be quite far apart.

 git diff --stat master remotes/origin/kubernetes-preview
 README.md |  18 +++-----------
 lab1.md   | 111 +++--------------------------------------------------------------------------------
 lab10.md  |  22 +++++++++++++++++
 lab1a.md  |  90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lab1b.md  | 152 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 lab2.md   |  40 +++++++++++++++++++++++++++++-
 lab3.md   |   8 ++++++
 lab4.md   |  23 +++++++++++++++---
 lab5.md   |  26 ++++++++++++++++++--
 lab7.md   |   8 ++++++
 lab9.md   |  37 +++++++++++-----------------
 11 files changed, 385 insertions(+), 150 deletions(-)

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@mario-mazo it seems like you have some extra commits. Did you checkout from kubernetes-preview or from master?

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Please can you do a PR to both?

Thanks,

Alex

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What we're looking for is the following:

1. PR from/to kubernetes-preview which updates Swarm & K8s instructions to use the faas-cli to create secrets when put in openfaas-fn (only)
2. PR from/to master to update only the Swarm instructions to use faas-cli` to create secrets

Would you like to go ahead with this, or do you want us to pick it up?

Alex

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ok will try to do the swarm part tonight and test it as I have not much experience with that swarm an submit both PRs tomorrow during the day.

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@ivanayov please can you do a final pass for the word "secret" in both branches before we close out this issue?

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@mario-mazo great job, looking forward to more PRs soon 🎉

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@alexellis I verified it's all covered

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Derek close: fixed

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Great 👍

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