Updrade to gradle 4.1

[tobrun]

This PR updates the Android project on master to gradle 4.1

• cherry pick [android] Reorganize dependencies #10268 to master
• update gradle wrapper to 4.1
• update android tools to 3.0.0
• update build tools to 26.0.2 (required for above)
• enable java 8 language features
• replaced anonymous inner classes with lambda
  • required cleanup of imports (project wide organize imports)

closes #9364

[tobrun]

To make this PR pass we need to update our CI images

[osana]

Looks good.
Tested that the changes run on my phone.

[zugaldia]

This is amazing, love how the code looks like with the lambda version.

[tobrun]

Since creating this PR, release branch was merged back to master.
Going to create a new PR to do the migration.