* Adds launchSettings.json to all of our templates.
* Provides an alternative flag to exclude it.
* Adds HTTPS support in launchSettings.json.
* Re-adds HTTPS redirect and HSTS middleware for C# templates.
* Improves some infrastructure aspects:
* Prefix all our test projects with AspNet.Template to allow easy
killing of orphaned processes.
* Setup an HTTPS certificate automatically for use with tests in the
same way our tooling does it on customers machines.
* Switch from OS selected ports to randomly selected ports. This is
required as we need to know the port to use for HTTPS.
* Allow disabling browser automation through an environment variable.
* Setup Firefox to allow untrusted certificates when using Selenium.
* Allow running Selenium tests on firefox by setting an environment
variable.