Fix test_candidates.py
Trackers don't walk anymore
Do not immediately call the periodic cleanup function to avoid recursion.
Merge pull request #345 from whirm/fix_test_candidates

Fix test candidates
Use V2 for discovery community
Remove legacy trackers and add raw IP's for the up to date trackers.
Refactor the requestcache to extend TaskManager
Remove the delayed call when timing out.
TODO entry
Initialize _after_ attaching the community
Add check for when trying to reclassifying a community to the same community.
Merge pull request #346 from egbertbouman/discovery_version_bump

Use V2 for discovery community
Merge pull request #347 from whirm/new_bootstrap

Remove legacy trackers and add raw IP's for the up to date trackers.
Merge pull request #342 from whirm/memleak_fix

Memleak fix branch
Do not try to resolve IPs
Merge pull request #349 from whirm/new_bootstrap

Do not try to resolve IPs