Refactor DI support in DataProtection

[ajaybhargavb]

[muratg]

@ajaybhargavb How close is this for check-in?

@Eilon Are we taking this in RC2? Or postpone to 1.0.0?

[ajaybhargavb]

I'll be sending an update to the PR today. But it will not include and test and documentation changes.

[Eilon]

I'd like to get this for RC2 because there are public API changes in it, and I spoke to @ajaybhargavb about it and we had a short email thread too.

[muratg]

Looks like the PR is a little stale at the moment. Do we have any blockers on this?

[ajaybhargavb]

Spoke to @Eilon and @rynowak this morning. This is being moved to RTM.