Conductr-cli

Allow user to specify the poll period when running `conduct logs -f` command.

The poll period is specified using `--follow-poll-period` option.

Add http package as hidden import required to build conduct and sandbox command 550

* Depend on dcos 0.5.5 cli and fix package.json bug 548
* Adjust `conduct logs` default lines fetched to be 50 when follow is enabled 549

CLI now supports `conduct backup` and `conduct restore` to back and restore ConductR cluster state.

Also includes some fixes:
* Fix sandbox network interface alias calculation on linux when launching with 10 or more instances - 537
* Fail if docker run exits with non-zero, thus failing if haproxy fails to start in the sandbox - 538
* Support /32 CIDR notation, thus allowing better usability in special environments like virtual machines. Fix bug with `sandbox run --addr-range` breaking conduct load/run - 542
* Update DC/OS support to detect service names and pick the first one with "conductr" in the name - 543
* Ensure correct field is used for DC/OS service name - 544
* Add missing `return False` for HTTP error supression - 545

**Fixes**
- Restore functionality to `conduct load-license` by removing base64 encoding of OAuth2 `Bearer` token

**Fixes**
- Ensure native executable generated in Windows is done using .spec files