yum.conf disable SSL verification and keep cache of files

Problem

User wants to disable SSL Verification during yum installation. this is needed in various cases for example if you are using company proxy with self signed certificate

Solution

Use the following settings in the file/etc/yum.conf

[main]
#proxy=http://proxy.tracston.com
cachedir=/var/cache/yum/$basearch/$releasever
keepcache=1
debuglevel=2
logfile=/var/log/yum.log
exactarch=1
obsoletes=1
gpgcheck=1
plugins=1
installonly_limit=5
bugtracker_url=http://bugs.centos.org/set_project.php?project_id=23&ref=http://bugs.centos.org/bug_report_page.php?category=yum
distroverpkg=centos-release
exclude=kernel*
sslverify=0

# PUT YOUR REPOS HERE OR IN separate files named file.repo
# in /etc/yum.repos.d