exposing json

WIP fix for removing templates

Removing templates part 1

replacing core/constants.h

removed template part 2

Changed fake data to filler data

Fixing CI

Fix CI part 2

CI fix part 2

Fix CI 3

Fixed lizard for data_util

Fixed clang

Fixing CI part 4

and fix cache perf tool compilation

update copyright

add examples to CacheClient docstring

Signed-off-by: zhoufeng <zhoufeng54@huawei.com>

From: @tina_mengting_zhang
Reviewed-by: @mikef,@robingrosman
Signed-off-by: @robingrosman

From: @lixiachen
Reviewed-by: 
Signed-off-by:

From: @lixiachen
Reviewed-by: @mikef,@liucunwei
Signed-off-by: @liucunwei

From: @xiefangqi
Reviewed-by: 
Signed-off-by:

and other minor change per the request of HQ testers

From: @xiaoyisd
Reviewed-by: 
Signed-off-by:

and other minor cache changes

and other minor changes per the request of HQ testers

Added fix for album, removed ifdef

From: @xiefangqi
Reviewed-by: @pandoublefeng,@jonyguo
Signed-off-by: @jonyguo