Modify mysqlsetup scripts on rhels7.7

xCAT-client/bin/mysqlsetup

@@ -928,6 +928,12 @@ sub initmysqldb
         }
 
         $cmd = "$sqlcmd --user=mysql";
+        #on rhels7.7, /usr/bin/mysql_install_db requires /usr/libexec/resolveip, 
+        #but it's available at the /usr/bin/resolveip
+        #use --force to grant table entries use ipaddress instead of hostname
+        if ($::linuxos == "rhels7.7") {
+            $cmd = "$cmd --force";
+        }
     }
     xCAT::Utils->runcmd($cmd, 0);
     if ($::RUNCMD_RC != 0)