Extension methods for Teams IP notifications

[Jeffders]

Microsoft Teams is going to support a PII/IP scrubbing messages using messageDelete and messageUpdate activities. These will signal to the bot that it should remove or alter the message contents that it has stored for that activity. This request is to add helper methods to the Teams SDK portion of the Bot Builder SDK that can identify these operations. Specifically, it needs to be something like:

IsRetentionDeleteMessage type == messageDelete channelData contains: {"ComplianceEventType”, “RetentionDelete”}.

IsDlpBlockMessage type == messageUpdate channelData contains {"ComplianceEventType”, “DlpBlock”}.

TODO: Create repo issues for this one once it gets unblocked.

[johnataylor]

Seems like something we could easily add. Just a couple of static methods, perhaps on TeamsInfo or at least in the C# we could consider extension methods if that was cleaner.

[gabog]

@Jeffders, @clearab: do we have what we need to unblock this issue? Otherwise I will remove it from R10 and move it to the backlog.

[clearab]

I don't think they are sending these yet - won't be until July

[gabog]

If this gets unblocked by 7/13 then it may make it into R10, if not, we will move this one to the backlog.

[gabog]

Moving this to the backlog, we should target this for R11

[cleemullins]

@tacri Code is there, but only enabled in a feature-flag. @clearab to follow up regarding scale concerns and deployment.

[clearab]

@tacri to let us know when to unblock and start implementation

[cleemullins]

Checked with @clearab and confirmed this remains blocked. Removing from the R11 iteration.