[NEW] exset command update version

[jjz921024]

Description of the feature

If VER and ABS flag exist at the same, update the version directly to new version that special by abs for a key when version equivalent ver.

eg: exset k1 value ver 2 abs 5

when version = 2, update value and version to 5

[chenyang8094]

VER and ABS should not exists at the same time.

[jjz921024]

VER and ABS should not exists at the same time.

I know that, But I want to specify a another version but increment one when the expected version is equal to the actual version