bugfix(CLI): generate the 'worker_cpu_affinity' config for Linux OS (#1658)

Fix #1657

.travis/apisix_cli_test.sh

@@ -73,6 +73,18 @@ done
 sed -i '/dns_resolver:/,+4s/^#//'  conf/config.yaml
 echo "passed: system nameserver imported"
 
+# check whether the 'worker_cpu_affinity' is in nginx.conf .
+
+make init
+
+grep -E "worker_cpu_affinity" conf/nginx.conf > /dev/null
+if [ ! $? -eq 0 ]; then
+    echo "failed: nginx.conf file is missing worker_cpu_affinity configuration"
+    exit 1
+fi
+
+echo "passed: nginx.conf file contains worker_cpu_affinity configuration"
+
 # check admin https enabled
 
 sed  -i 's/\# port_admin: 9180/port_admin: 9180/'  conf/config.yaml

bin/apisix

@@ -21,6 +21,8 @@ local function trim(s)
     return (s:gsub("^%s*(.-)%s*$", "%1"))
 end
 
+-- Note: The `excute_cmd` return value will have a line break at the end,
+-- it is recommended to use the `trim` function to handle the return value.
 local function excute_cmd(cmd)
     local t, err = io.popen(cmd)
     if not t then
@@ -676,7 +678,7 @@ local function init()
     local sys_conf = {
         lua_path = pkg_path_org,
         lua_cpath = pkg_cpath_org,
-        os_name = excute_cmd("uname"),
+        os_name = trim(excute_cmd("uname")),
         apisix_lua_home = apisix_home,
         with_module_status = with_module_status,
         error_log = {level = "warn"},