filters: add UriPart function

[espenrl]

This filter will extract information from an uri. It essentially parses the string as an Uri and access its properties.

typeof(Uri).GetProperties().Select(a => a.Name).OrderBy(a => a).ToArray()

• AbsolutePath
• AbsoluteUri
• Authority
• DnsSafeHost
• Fragment
• Host
• HostNameType
• IsAbsoluteUri
• IsDefaultPort
• IsFile
• IsLoopback
• IsUnc
• LocalPath
• OriginalString
• PathAndQuery
• Port
• Query
• Scheme
• UserInfo

Example

foo = https://octopus.com/docs
#{foo | UriPart Host} --> octopus.com

[CLAassistant]

All committers have signed the CLA.

[espenrl]

Thanks for the feedback. The unit test code is much more clean now.

1. I've had adventures with json recently, so I fixed a casing issue. false/true works way much better than False/True.
2. The code now handle exceptions on the Uri property accessors as they often throw.

[michaelnoonan]

Oh, one last thing will be updating the docs so everyone can learn about the great work you've done. If you contribute the docs, I think it would be nice to add a mention to your github handle. :)

https://github.com/OctopusDeploy/docs/blob/master/docs/deployment-process/variables/variable-filters.md

[espenrl]

I've added docs, done the suggested changes and some minor adjustments of my own.