Aspera CLI v4.8.0

• new: #76 add resource group_membership in aoc
• new: add resource metadata_profile in faspex5
• new: add command user profile in faspex5
• new: add config wizard for faspex5
• new: #75 gem is signed
• change: (break) removed dependency on gem grpc which is used only for the trsdk transfer agent. Users can install the gem manually if needed.
• change: (break) hash vault keys are string instead of symbol
• change: cleanup with rubocop, all strings are immutable now by default, list contants are frozen
• change: removed Hash.dig implemetation because it is by default in Ruby >= 2.3
• change: default is now to hide secrets on command output. Set option show_secrets to reveal secrets.
• change: option insecure displays a warning