Yan Mo

Update more detail on this issue: With running "create_and_delete_subnets" 10 concurrency. Will have the following error: ` 2021-09-02 23:17:13.593 26032 DEBUG neutronclient.v2_0.client [-] Error message: {"timestamp":"2021-09-03T06:17:13.587+0000","status":500,"error":"Internal Server Error","message":"subnets are not...

``` org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.util.concurrent.CompletionException: org.springframework.web.client.HttpClientErrorException$NotFound: 404 : [{"timestamp":"2021-08-30T23:38:25.008+0000","status":404,"error":"Not Found","message":"Ip address allocation not found","path":"/ips/cabeab2f-aee1-40ba-a11f-ffdd7d9aeeaa/10.187.0.11"}] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014) at org.springframework.web.servlet.FrameworkServlet.doDelete(FrameworkServlet.java:931) at javax.servlet.http.HttpServlet.service(HttpServlet.java:666) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)...

For Scenario 3:Step 1 Create subnet/router and attach subnet with router, Step 2 add routing rule, Step 3 create port - For Step 3, need to start gateway port first

Dahai's PR #664 could solve this issue, will test it out.

After pull the PR #664 to test, the above issue from rally test is gone

Thanks, the `echo >> /tmp/sai-temp.profile` fix when the file is missing a line feed at the end issue