Add support for HANA XSA in the UPS and HDI commands.

[jung-thomas]

• Add new utility library xs.js that mimics the commands in cf.js and allows for calling the controller APIs via the xs curl command. This library and the functionality described here will require the xs client to be installed locally and you have to already be logged in with xs login.
• Add --cf option (that defaults to Cloud Foundry) on the ups and hdi commands
• If the --cf option is set to false, then connect via the xs client and perform the same operation for XSA