Update network service discovery keys

[TomHa-Apadmi]

RCF 6763 states that network discovery keys should be no more than nine characters long. Primarily this is due to minimising the size of the underlying network packets as broadcasting is expensive on wireless networks. The current offending keys being used by Mockzilla are:

• appPackage
• operatingSystemVersion
• deviceModel
• appVersion
• mockzillaVersion

As these keys are referenced in both the KMP package and the desktop companion app, changing these keys will constitute a breaking change. We'll need to come up with a migration plan that ensures new versions of the packages supporting these keys are swiftly published.

[JordanllHarper]

First renaming suggestions that come to mind (to get the ball rolling):

• appPkg
• OSVers
• deviceMdl (not sure on this)
• appVers
• mckzVers

[SamC-Apadmi]

First part of resolving this is in PR

It will have to be picked up again after this change is in the wild for a while