Adds basic support for Oracle Linux 7 in tasks that run for RedHat-family distributions. This primarily fixes an issue with MongoDB's systemd unit file not being correct in Oracle Linux 7.
Notes for Reviewers
[ ] The commit history must be preserved - please use the rebase-merge or standard merge option instead of squash-merge
Adds basic support for Oracle Linux 7 in tasks that run for RedHat-family distributions. This primarily fixes an issue with MongoDB's systemd unit file not being correct in Oracle Linux 7.
Notes for Reviewers