Use lightweight workload test cases in VM for the purpose
to keep number of dirty pages is in low rate of VM's total
memory.
Fix issue #2805.
Change-Id: I52efd0d0522ccef713ba2c3a451daac0683234dc
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15954
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>