marvin: remoteSSHclient logs

Adding logging for commands sent, and executed with results returned
frmo the remote host.

tools/marvin/marvin/remoteSSHClient.py

@@ -19,6 +19,7 @@ import paramiko
 import time
 import cloudstackException
 import contextlib
+import logging
 from contextlib import closing
 
 class remoteSSHClient(object):
@@ -34,6 +35,7 @@ class remoteSSHClient(object):
         while True:
             try:
                 self.ssh.connect(str(host),int(port), user, passwd)
+                logging.debug("[SSHClient] connecting to server %s @ port % with user:passwd %s:%s"%(str(host), port, user, passwd))
             except paramiko.SSHException, sshex:
                 if retry_count == 0:
                     raise cloudstackException.InvalidParameterException(repr(sshex))
@@ -46,6 +48,7 @@ class remoteSSHClient(object):
         
     def execute(self, command):
         stdin, stdout, stderr = self.ssh.exec_command(command)
+        logging.debug("[SSHClient] sending command %s to host"%(command, str(self.host)))
         output = stdout.readlines()
         errors = stderr.readlines()
         results = []
@@ -57,7 +60,7 @@ class remoteSSHClient(object):
         else:
             for strOut in output:
                 results.append(strOut.rstrip())
-    
+        logging.debug("[SSHClient] command %s returned %s"%(command, results))
         return results
     
     def scp(self, srcFile, destPath):