Firewall as a service API Test Enhancement

 Add Test to insert and remove firewall rule to firewall policy
    -Create a firewall rule
    -Create a firewall policy
    -Insert a firewall rule to policy
    -Validate the insertion of rule to policy
    -Create another firewall rule
    -Insert the another rule after the first rule
    -Validate the postion after the rule insertion after the first rule
    -Remove the rule inserted second time
    -Again Insert that  rule before the first rule
    -Validate the position of rule inserted before  the first rule

    Add Test audited attributes of firewall policy
    -Create a firewall policy
    -Validate the default audited attribute
    -Update the audited attribute to true
    -Insert a firewall rule
    -Validate the audited attributes of the firewall
     policy

Change-Id: Ib3fefb42b976e2ebb6921cab4290e9c7dbaa58c2
Merge "Firewall as a service API Test Enhancement"