Certificate failure fix

[4or5trees]

Purpose

• Fixes TLS Handshake/certificate failure issue: https://github.com/Azure-Samples/azure-iot-starter-kits/issues/31
• Fixes bug with 3-speech-recognizer tutorial where NLP response is never returned (leading to no commands being recognized)

Does this introduce a breaking change?

[ ] Yes
[X] No

Pull Request Type

What kind of change does this Pull Request introduce?

[X] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Get the code
  • Prepare Rasberry Pi for tutorial 1/3 (attach relevant modules)
  • Build & Push files for tutorial 1/3
  • Create deployment for single device for tutorial 1/3

Test the code

• N/A

What to Check

Verify that the following are valid

• Tutorial 1: Verify that D2C messages can be successfully monitored in VScode
• Tutorial 3:
  • Verify that D2C messages can be successfully monitored in VScode
  • Verify that commands get recognized (e.g. 'time' or 'joke')

Other Information

Verified that these changes work on my own Raspberry Pi Grove Starter kit. I also updated the deployment.template.json for tutorial 2 with EdgeHub tag 1.0, even though I did not experience any issue with this tutorial.