GO-GPDB release v3.2.0 w/ GitHub Release Support

• Downloads gpdb from GitHub releases if --github is specified
• Based on the code from here https://github.com/pivotal-gss/go-gpdb/pull/26

Steps:

1. Download the attached config.yml and gpdb-github to ~
2. Make sure ssh $HOSTNAME works. If not, you could run ssh-keygen -f ~/.ssh/id_rsa -N '' && cat .ssh/id_rsa.pub >> .ssh/authorized_keys.
3. Make sure you are logged in as a non-root user which has sudo privileges (necessary for yum installing the greenplum-db .rpm)
4. Run commands

sudo yum install -y sshpass
echo $HOSTNAME > hostfile
sed -i "s/gpadmin/$USER/g" config.yml
chmod +x gpdb-github
./gpdb-github download -v 6.0.1 --github --install

1. Use your new gpdb cluster!