rename output file to sample

Change-Id: I9c62114ebd6c2016fa177565a4413138cafd573b
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/tests/integration/reports/qpi-report b/tests/integration/reports/qpi-report.sample
similarity index 100%
rename from tests/integration/reports/qpi-report
rename to tests/integration/reports/qpi-report.sample

diff --git a/tests/integration/reports/system-info b/tests/integration/reports/system-info.sample
similarity index 100%
rename from tests/integration/reports/system-info
rename to tests/integration/reports/system-info.sample