ecr: add s3 bucket and role policy for FVP job

for TFC-92. The summary of changes:

Create the S3 bucket for tuxtput
Create policy to access it, and attach it to existing ecr_push_pull role
make an instance profile that grants access to ecr_push_pull for instances it is attached to


Change-Id: Iba6520b9d533ff92255deb3b7bea9d2c708d082e
6 files changed