Migrate get vim_types to new framework

A simple comparison between new framework and old framework can
be found at [1]. In a high concurrent situation, new framwork
is 24 times faster than old one. Since get vim_types is less
overhead, result in [1] is more convincing to just compare frameworks.

[1] https://paste.ubuntu.com/p/Nc5WTgsKNP/

Change-Id: I0bd3ada0684cb20319895ced77d10d8593873eee
Issue-ID: MULTICLOUD-150
Signed-off-by: Hong Hui Xiao <honghui_xiao@yeah.net>