replace wget w/ curl in tripleo-quickstart codebase

[wes hayutin]

http://codesearch.openstack.org/?q=wget&i=nope&files=&repos=openstack/tripleo-quickstart,openstack/tripleo-quickstart-extras

using wget can lead to problems because it's not default. We should use curl instead.
Example:
https://sf.hosted.upshift.rdu2.redhat.com/logs/periodic-hourly/code.engineering.redhat.com/openstack/tripleo-ci-internal-jobs/master/periodic-tripleo-ci-centos-7-bm_envA-3ctlr_1comp-featureset001-master/ba65b5c/logs/undercloud/home/zuul/overcloud_image_build.log.txt.gz

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/687498

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/687498
Committed: https://git.openstack.org/cgit/openstack/tripleo-quickstart-extras/commit/?id=5a8bd7e1623a08bee736ad3b29d633acb48965fa
Submitter: Zuul
Branch: master

commit 5a8bd7e1623a08bee736ad3b29d633acb48965fa
Author: Arx Cruz <email address hidden>
Date: Wed Oct 9 10:50:30 2019 +0200

    Replace wget with curl

    Using wget can lead to problems because it's not default.
    We should use curl instead

    Change-Id: Idc859c57582ed3b83c6177e91e14ba4828311826
    Closes-Bug: #1847344