update gluster_block.py

[gluster_block] changed plugin behaviour

1.removed targetcli cmd and config as they are taken care by targetcli plugin
2.used tuples instead of lists

sos/plugins/gluster_block.py

@@ -20,16 +20,13 @@ class GlusterBlock(Plugin, RedHatPlugin):
 
     plugin_name = 'gluster_block'
     profiles = ('storage',)
-    packages = ["gluster-block"]
-    files = ["/usr/sbin/gluster-block"]
-    config_to_collect = ["/sys/kernel/config/target", "/etc/target"]
+    packages = ("gluster-block",)
+    files = ("/usr/sbin/gluster-block",)
 
     def setup(self):
-        self.add_cmd_output("targetcli ls")
 
-        # collect config files
-        for config_file in self.config_to_collect:
-            self.add_copy_spec(config_file)
+        # collect config
+        self.add_copy_spec("/sys/kernel/config/target")
 
         # collect logs - apply log_size for any individual file
         # all_logs takes precedence over logsize
@@ -43,3 +40,4 @@ def setup(self):
                 self.add_copy_spec(f, limit)
         else:
             self.add_copy_spec("/var/log/gluster-block")
+