SCE-155: usage of package interfaces.
SCE-155: usage of package interfaces.

Use interfaces provided by 'workloads' package instead of own defined.

Signed-off-by: Maciej Patelczyk <dab3e64c9b6ff7dce28693076765b4373d8dfee7@intel.com>

intelsdi-x/swan,intelsdi-x/swan,intelsdi-x/swan