[travis] switch to https again
[travis] switch to https again
mschreiber/packagedrone,ibh-systems/packagedrone,eclipse/packagedrone,mschreiber/packagedrone,ibh-systems/packagedrone,mschreiber/packagedrone,eclipse/packagedrone,eclipse/packagedrone,ibh-systems/packagedrone,mschreiber/packagedrone,ibh-systems/packagedrone,eclipse/packagedrone