Hcli-hg

- Change to only present param links when a parameter would be required for a command or option
- Fix broken deallocate option -n in nw sample app
- Update multi quote in hfm and nw sample apps HCLI docs

- Fix incorrect -n flag name on nw sample app
- Fix missing hcli_version on HCLI command, option, execution and parameter per HCLI 1.0 spec

- Update README documentation to clarify what HCLI Core does
- Update nw sample app to include network allocation for a specific logical group & network.
- Update nw sample app to include network deallocation for a specific logical group & network
- Update nw sample app to include network group listing
- Update nw sample app to include adding and removing CIDR range in the free pool for a given logical group.
- Fix empty or non-conformant json error on jsonf go default hcli app

- Update to clarify the README.
- Update hub to column separated output.
- Update hub to allow listing all services registered to a namespace.
- New sample application nw for managing network CIDR block allocation (deconflicted)
- Fix execution matching to non-greedy to avoid parameters getting cut out in multi-parameter command lines

- Update documentation to showcase hfm instead of hub.
- Prune chroot out of hfm sample.

- Add xenial python 3.7 support.
- Test using cli auto discovery with the latest version of huckle.
- Add tests for hfm sample.
- Add ls and chroot to hfm sample.