Specify poll period for conduct logs command

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

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

PyInstaller fixes

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

Depend on dcos 0.5.5 cli

• 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

Cluster Backup and Restore

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

Fix license loading

Fixes

• Restore functionality to conduct load-license by removing base64 encoding of OAuth2 Bearer token

Fix native sandbox build

Fixes

• Ensure native executable generated in Windows is done using .spec files

Fix native sandbox build

Fixes

• Sandbox native executable: add semver library to hidden imports #525

Sandbox version notification and bug fixes

Feature

• New sandbox version notification #510

Fixes

• Ensure that the current working directory exists or exit with intelligible error #513
• Fix conduct load creating empty bundle configuration #524

Various fixes

• Adjust bintray resolver credentials to honor realm values #514
• Allow empty services and acls arrays #511
• bndl: Treat empty list args as None #506
• Tolerate empty agent resources #505
• Align role arg format #503

S3 Resolver, improvements, and bug fixes

Feature update

• Introduce S3 Resolver #490

Improvements

• Notify user of conduct load -f to reauthenticate #501
• Improved error reporting for OS X reverser dns lookup #496
• Enable Continuous Delivery as default feature #492
• Allow variable substitutions in --env arguments for bndl tool #489

Fixes

• conduct load/deploy now reads the first bundle.conf file listed in the archive central directory #499
• CLI now ignores whitespace for resolver credentials #495
• Refactor bndl so that component configurations are modified more consistently between different input types #494
• Wait for bundle scale: do not immediately exit when encountering error #493