Implement multi insert test case for pkg agent handler - part 2 (#1645)

* impl multiinsert boundary value test (part1)

Signed-off-by: kevindiu <[email protected]>

* impl remaining tests

Signed-off-by: kevindiu <[email protected]>

* change max dim

Signed-off-by: kevindiu <[email protected]>

* change max dim to reference value

Signed-off-by: kevindiu <[email protected]>

* change max dim to reference value

Signed-off-by: kevindiu <[email protected]>

* fix comments

Signed-off-by: kevindiu <[email protected]>

* rename help function name

Signed-off-by: kevindiu <[email protected]>

* combine genXXXInsertReq function

Signed-off-by: kevindiu <[email protected]>

* rename helper function name

Signed-off-by: kevindiu <[email protected]>