Fix sdc usage cmd (drv_cfg) result, and log command result

Author: sureshanaparti

plugins/storage/volume/scaleio/src/main/java/org/apache/cloudstack/storage/datastore/util/ScaleIOUtil.java

@@ -321,8 +321,8 @@ public static boolean isRemoveMdmCliSupported() {
         String command = SDC_HOME_PATH + "/bin/" + USAGE_CMD;
 
         Pair<String, String> result = Script.executeCommand(command);
-        String stdErr = result.first();
-        String stdOut = result.second();
+        String stdOut = result.first();
+        String stdErr = result.second();
 
         /*
          * Check whether stderr or stdout contains mdm removal "--remove_mdm" parameter.

utils/src/main/java/com/cloud/utils/script/Script.java

@@ -687,6 +687,7 @@ public static Pair<String, String> executeCommand(String command) {
         OutputInterpreter.AllLinesParser parser = new OutputInterpreter.AllLinesParser();
         String stdErr = script.execute(parser);
         String stdOut = parser.getLines();
+        LOGGER.debug(String.format("Command [%s] result - stdout: [%s], stderr: [%s]", command, stdOut, stdErr));
         return new Pair<>(stdOut, stdErr);
     }