Install certs defined as part of job payload from Azure Keyvault

[stishkin]

If HTTPs endpoint requires custom cert - add ability to add the cert before running test tools

[stishkin]

Attempt 1:

• Set certificate in Azure Keyvault
• Pass certificate to the container in encrypted environment variable (since this is the only way we can pass cert secretly to the container)
• Add "install certificates" command to RAFT SDK, so tools run that on initialization