1. Add 'set +e' before running k8s tests, then the following builder
of functest-store-results will be executed.
2. Remove the logic of managing k8s scenario from functest-alpine.sh
Change-Id: I9a269fc46e45d1db6af741775d475e887ebc79c7 Signed-off-by: Linda Wang <wangwulin@huawei.com>