libct/README: simplify example, rm inheritable caps

The example is too long since it lists too many capabilities.
Simplify it, leaving only two capabilities.

Also, remove ambient capabilities from the set. Inheritable capabilities
were removed earlier by commit 98fe566, but ambient capabilities can't
be raised without inheritable ones.

Fixes: 98fe566
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

libcontainer/README.md

@@ -59,66 +59,14 @@ config := &configs.Config{
 	Rootfs: "/your/path/to/rootfs",
 	Capabilities: &configs.Capabilities{
 		Bounding: []string{
-			"CAP_CHOWN",
-			"CAP_DAC_OVERRIDE",
-			"CAP_FSETID",
-			"CAP_FOWNER",
-			"CAP_MKNOD",
-			"CAP_NET_RAW",
-			"CAP_SETGID",
-			"CAP_SETUID",
-			"CAP_SETFCAP",
-			"CAP_SETPCAP",
-			"CAP_NET_BIND_SERVICE",
-			"CAP_SYS_CHROOT",
 			"CAP_KILL",
 			"CAP_AUDIT_WRITE",
 		},
 		Effective: []string{
-			"CAP_CHOWN",
-			"CAP_DAC_OVERRIDE",
-			"CAP_FSETID",
-			"CAP_FOWNER",
-			"CAP_MKNOD",
-			"CAP_NET_RAW",
-			"CAP_SETGID",
-			"CAP_SETUID",
-			"CAP_SETFCAP",
-			"CAP_SETPCAP",
-			"CAP_NET_BIND_SERVICE",
-			"CAP_SYS_CHROOT",
 			"CAP_KILL",
 			"CAP_AUDIT_WRITE",
 		},
 		Permitted: []string{
-			"CAP_CHOWN",
-			"CAP_DAC_OVERRIDE",
-			"CAP_FSETID",
-			"CAP_FOWNER",
-			"CAP_MKNOD",
-			"CAP_NET_RAW",
-			"CAP_SETGID",
-			"CAP_SETUID",
-			"CAP_SETFCAP",
-			"CAP_SETPCAP",
-			"CAP_NET_BIND_SERVICE",
-			"CAP_SYS_CHROOT",
-			"CAP_KILL",
-			"CAP_AUDIT_WRITE",
-		},
-		Ambient: []string{
-			"CAP_CHOWN",
-			"CAP_DAC_OVERRIDE",
-			"CAP_FSETID",
-			"CAP_FOWNER",
-			"CAP_MKNOD",
-			"CAP_NET_RAW",
-			"CAP_SETGID",
-			"CAP_SETUID",
-			"CAP_SETFCAP",
-			"CAP_SETPCAP",
-			"CAP_NET_BIND_SERVICE",
-			"CAP_SYS_CHROOT",
 			"CAP_KILL",
 			"CAP_AUDIT_WRITE",
 		},