A symble to describe whether compress target when save_workspace/cache

Just advice item:

  • A config symble to choice tar/gzip/xz when save_workspace/cache
[root@ten-vm1 caches]# pwd
[root@ten-vm1 caches]# tar -zcvf ss.tar.gz d4b26868-3a19-4a96-9f67-2c1ef59afd31-cache-node12-sum-b223d64510d41b729e3a57f9382c0d29.tar 
[root@ten-vm1 caches]# ll -h
total 100M
-rw-rw---- 1 root root  79M Nov  4 17:25 d4b26868-3a19-4a96-9f67-2c1ef59afd31-cache-node12-sum-b223d64510d41b729e3a57f9382c0d29.tar
-rw-rw---- 1 root root 5.7M Nov  4 17:30 d4b26868-3a19-4a96-9f67-2c1ef59afd31-cache-sum-9d682c5d6f2181708beb50b22ce23c45.tar
-rw-r--r-- 1 root root  17M Nov  4 18:47 ss.tar.gz

In some situation package with gzip/xz will save much disk space. And maybe it would be quicker when it transfer?