fix:(策略新增修改)1.分隔符参数化，将分隔符定义于Variables中

2.filterList分隔符向v1版本兼容，objectId和protocolField之间的分隔符默认值改成|，objectId之间的分隔符改成：

01-TestCase/tsg_bfapi/policy_object/PolicyObjectTests.robot

@@ -104,7 +104,7 @@ Policy-Post-v2-00004
     ...    policyDesc=autotest
     ...    action=deny    #effectiveRange={}
     ...    userRegion={"protocol":"SSL","method":"drop"}
-    ...    filterList=${objectId}:TSG_FIELD_SSL_CN
+    ...    filterList=${objectId}|TSG_FIELD_SSL_CN
     ...    isValid=${1}    appIdObjects=3
     ${rescode}    ${policyIds}   AddPolicies    1    ${policy}    v2    
     Log    ${rescode} ${policyIds} ${objectIds}