Added Opensource.com content tagged OpenStack to planet feed

Change-Id: I69b08d589b42d57e62568bf9cacc643094958f3f
Update image for Florian Haas

The updated image is the one I am using on most of my social
media profiles. I'd like to use it on Planet OpenStack as well.

Change-Id: Ic83ae45a96d27f3f789dd022063a6d5951b9caa5
Merge "Update image for Florian Haas"
Fix image for Florian Haas

Previous commit followed the wiki page and set the image to
100x100px, which isn't what Planet actually uses (instead squeezing
the image to 75x100). Update with a 75x100 image.

Change-Id: I276982f1ccacba84debf1b0e58ef3dd6dfb5679d