JIRA: RELENG-191
JIRA: BOTTLENECK-131
POSCA testsuite in Bottlenecks current have 2 stress testcases.
This pathch is to add CI process for these traffic stress test.
Changes:
1. Add posca stress traffic
2. Add posca stress dataplane
3. Cleanup env & run suite script refactoring
4. Call sh script process added
Change-Id: I788bd91bca895bf01fd59802f1641747175c80ee
Signed-off-by: yuyang <Gabriel.yuyang@huawei.com>