BREAKING Switch default to Globus v5.4, numerous parameter changes

[treydock]

Switch default Globus version to v5, only support v5.4
Drop RedHat/CentOS 6 support
Add RedHat/CentOS 8 support
Update module dependencies
Manage gcsweb user/group

Parameter changes when

• Remove remove_cilogon_cron (affects version => 4 only)
• Change version to 5
• Change package_name to globus-connect-server54
• Rename globus_client_id to client_id
• Rename globus_clienet_secret to client_secret
• Removed
  • endpoint_server_name
  • letsencrypt_email
  • letsencrypt_agreetos
  • gridftp_require_encryption
• Added
  • manage_user
  • group_gid
  • user_uid
  • display_name
  • owner
  • deployment_key
  • organization
  • keywords
  • department
  • contact_email
  • contact_info
  • info_link
  • description
  • public
  • incoming_port_range
  • outgoing_port_range
  • ip_address
  • export_node
  • import_node