Set the port of S3_URL to 8080 with swift3 enabled

Fixes: bug #1171608
The value of the port defaults to 3333 which is the
default for nova-objectstore.

Change-Id: If87df6a765bcfc4d467628411dceec72d5af412e
Merge "Set the port of S3_URL to 8080 with swift3 enabled"