remove url-path from the default value of s3_store_host

[OpenStack Infra]

https://review.openstack.org/124272
commit 3fc2397dc3e6efd0d2c8132a32fd3deb8714e8de
Author: Masashi Ozawa <email address hidden>
Date: Fri Sep 26 05:16:16 2014 +0000

    remove url-path from the default value of s3_store_host

    For s3 endpoints, url-path is not necessary to define and it's
    something like just "s3.amazonaws.com" for Amazon s3 or
    "s3.compatibleserver.com:8080" for S3 thirdparty compatible server
    that is listening on 8080. So the current default value with '/v1.0/'
    of s3_store_host is confusing.

    s3_store_host = 127.0.0.1:8080/v1.0/

    DocImpact: The following parameter is changed in glance-api.conf
    and glance-cache.conf.
    -s3_store_host = 127.0.0.1:8080/v1.0/
    +s3_store_host = 127.0.0.1:8080

    Change-Id: I3b103121e46f58fda339530c62c71b65a69e5dc5

[Darren Chan (dazzachan)]

This is being addressed in https://bugs.launchpad.net/openstack-manuals/+bug/1386089