libguestfs security, bug fix, and enhancement update

1.48.4-2.0.1 - Add btrfs-progs to the packages installed in the appliance Orabug: 34137448 - Replace upstream references from a description tag - Fix build on Oracle Linux Orabug: 29319324 - Set DISTROORACLELINUX correspeonding to ol 1:1.48.4-2 - Rebase to new stable branch version 1.48.4 resolve...