Merge pull request softlayer#855 from sergiocarlosmorales/master

Version bump to v5.2.11

Merge pull request softlayer#849 from sergiocarlosmorales/fix-memory-…

…hardware-list

Avoid blindly passing memory result to formatter

bump to 5.2.9

Update setup.py

bumping to 5.2.8

version to v5.2.6

Update CHANGELOG.md