Complete gRPC.io domain ownership transfer to LF

[chalin]

• Will track progress through this issue (this is a followup to the email I sent earlier).
• Related:
  • Analytics: resolve redundant-hostnames warning grpc/grpc.io#1012

/cc @thisisnotapril @caniszczyk @amye @nate-double-u

[chalin]

/cc @emckean

[chalin]

@thisisnotapril, I was told by @emckean that you're actively working on this. Any update?

[chalin]

From @thisisnotapril:

Ticket for transfer: https://jira.linuxfoundation.org/plugins/servlet/desk/portal/2/IT-25047