494 UI create redeploy component

[bobjac]

Summary

This pull request includes the following:

• Creates a redeploy pipeline in the backend web host which recreates the parameter file for both Terraform and ARM, and then executes the deployment job again
• Extends the web api to include an operation for returning existing deployment parameters
• Extends the web api to include a Redeploy operation that accepts updates parameters
• Creates a Redeploy react component that reads the current parameter values and gives the user the opportunity to modify and resubmit

Closes #494.