tree 9e212d8816f5e92145d031db6fe6c4a56322e9b6
parent b859031855457a8912db6d197dc005a31748db2b
author Junxiao Shi <git@mail1.yoursunny.com> 1483047884 +0000
committer Junxiao Shi <git@mail1.yoursunny.com> 1483047884 +0000

fw: instantiate strategy of next higher version

When an exact strategy version is unavailable, strategy registry now
instantiates the next higher version which can offer backwards compatibility.

All existing strategies do not support other versions.

refs #3868

Change-Id: Id2cf9ae3a1fa078ce8be815eea9396f5aa81ecbb