Fix for issue #166 - make allowTelemetry option to work

[enaess]

I've tested this two ways:

• ./gradlew -DallowTelemetry=true|false the property merge function will set the property accordingly
• ./gradlew with azureFunctions { allowTelemetry = true|false } in build.gradle

Also moved the mergeCommandLineParameters() function to execute prior to the check for allowTelemetry allowing the property to be set.

Display the disclaimer of privacy statement to only when allowTelemetry is evaluated to true, which is still the default.

[enaess]

@microsoft-github-policy-service agree company="Absolute"

[enaess]

@microsoft-github-policy-service agree company="Absolute"

[enaess]

Could you please give this a review @Flanker32?

[enaess]

@wangmingliang-ms could you please give this a review?

[Flanker32]

@enaess Thanks a lot for your efforts and sorry for the late response. We will release the fix asap