Allow wget to handle Non-English output

This bug has been reported and fixed before here: https://bugs.launchpad.net/devstack/+bug/978739
It seems that the fix has been broken unintentionally by merging the commit of '6b93f829c1a78b5e0a06a05a7e8966f6abfc3474'.
This is reopened as a new bug for fixing.

========================Devstack log=======================================
+ echo 'Waiting for keystone to start...'
Waiting for keystone to start...
+ timeout 60 sh -c 'while http_proxy= wget -O- http://192.168.156.156:5000/v2.0/ 2>&1 | grep -q '\''refused'\''; do sleep 1; done'
+ SERVICE_ENDPOINT=http://192.168.156.156:35357/v2.0
+ ADMIN_PASSWORD=openstack
+ SERVICE_TENANT_NAME=service
+ SERVICE_PASSWORD=openstack
+ SERVICE_TOKEN=openstack
+ SERVICE_ENDPOINT=http://192.168.156.156:35357/v2.0
+ SERVICE_HOST=192.168.156.156
+ S3_SERVICE_PORT=3333
+ KEYSTONE_CATALOG_BACKEND=template
+ DEVSTACK_DIR=/opt/stack/devstack
+ ENABLED_SERVICES=g-api,g-reg,key,n-api,n-crt,n-obj,n-cpu,n-net,n-vol,n-sch,n-novnc,n-xvnc,n-cauth,horizon,mysql,rabbit
+ bash /opt/stack/devstack/files/keystone_data.sh
No handlers could be found for logger "keystoneclient.client"
Unable to communicate with identity service: [Errno 111] Connection refused. (HTTP 400)
usage: keystone user-role-add --user_id <user-id> --role_id <role-id>
                              [--tenant_id <tenant-id>]
keystone user-role-add: error: argument --tenant_id: expected one argument
usage: keystone user-role-add --user_id <user-id> --role_id <role-id>
                              [--tenant_id <tenant-id>]
keystone user-role-add: error: argument --tenant_id: expected one argument
usage: keystone user-role-add --user_id <user-id> --role_id <role-id>
                              [--tenant_id <tenant-id>]
keystone user-role-add: error: argument --tenant_id: expected one argument
...
...
...
++ glance --os-auth-token --os-image-url http://192.168.156.156:9292 image-create --name cirros-0.3.0-x86_64-uec-kernel --public --container-format aki --disk-format aki
usage: glance [--os-username OS_USERNAME] [--os-password OS_PASSWORD]
              [--os-tenant-id OS_TENANT_ID] [--os-tenant-name OS_TENANT_NAME]
              [--os-auth-url OS_AUTH_URL] [--os-region-name OS_REGION_NAME]
              [--os-auth-token OS_AUTH_TOKEN] [--os-image-url OS_IMAGE_URL]
glance: error: argument --os-auth-token: expected one argument
+ KERNEL_ID=
+ '[' -n /opt/stack/devstack/files/images/cirros-0.3.0-x86_64-uec/cirros-0.3.0-x86_64-initrd ']'
++ get_field 2
++ read data
++ grep ' id '
++ glance --os-auth-token --os-image-url http://192.168.156.156:9292 image-create --name cirros-0.3.0-x86_64-uec-ramdisk --public --container-format ari --disk-format ari
usage: glance [--os-username OS_USERNAME] [--os-password OS_PASSWORD]
              [--os-tenant-id OS_TENANT_ID] [--os-tenant-name OS_TENANT_NAME]
              [--os-auth-url OS_AUTH_URL] [--os-region-name OS_REGION_NAME]
              [--os-auth-token OS_AUTH_TOKEN] [--os-image-url OS_IMAGE_URL]
glance: error: argument --os-auth-token: expected one argument
+ RAMDISK_ID=
+ glance --os-auth-token --os-image-url http://192.168.156.156:9292 image-create --name cirros-0.3.0-x86_64-uec --public --container-format ami --disk-format ami
usage: glance [--os-username OS_USERNAME] [--os-password OS_PASSWORD]
              [--os-tenant-id OS_TENANT_ID] [--os-tenant-name OS_TENANT_NAME]
              [--os-auth-url OS_AUTH_URL] [--os-region-name OS_REGION_NAME]
              [--os-auth-token OS_AUTH_TOKEN] [--os-image-url OS_IMAGE_URL]
glance: error: argument --os-auth-token: expected one argument
++ failed
++ local r=2
++ set +o xtrace
===================================================================