Ihar Hrachyshka 8d1b5bda38 CountableResource: try count/get functions for all plugins
It's of no guarantee that core plugin implements counter/getter function
for a CountableResource. Instead of just trying core plugin, try every
plugin registered in the directory.

To retain backwards compatibility, we also make sure that core plugin is
checked first.

Change-Id: I5245e217e1f44281f85febbdfaf873321253dc5d
Closes-Bug: #1714769
(cherry picked from commit 07bfe6adb96ee0a88b9dd54d7e4b0bb684b63e3c)
2017-09-12 16:23:22 +00:00
..