BlueData Worker reformat and reinstall

bluedata-worker-cleanup-and-reset.sh

# Register each worker.
./bootstrap-uga-general.sh

# Make sure each worker is subscribed to the RHEL channels:
# - RHEL Server Optional
# - RHEL Server Supplementary
# - RHN Tools for RHEL

# Run on each worker.
yum -y update

# Check out the partitions on the workers:
# lsblk
# If needed, delete the partitions from the previous BlueData install.
parted /dev/sdb -- rm 2
parted /dev/sdb -- rm 1
wipefs -a /dev/sdb
blockdev --rereadpt /dev/sdb

# Check the partitions again:
# lsblk

# On controller machine:
# - /opt/bluedata/bundles/bluedata-*/scripts/common/common.sh 
# - look for execute_on_worker
# - add "--force" to "local EXTRAS='—force '" variable