fix ssh connection plugin to work with ipv6 address

Due to various inconsistencies of ssh and sftp regarding ipv6 and
ipv4 handling, some special arguments must be passed, and the
ipv6 must be passed in a specific format.

lib/ansible/runner/connection_plugins/ssh.py

@@ -38,6 +38,7 @@ class Connection(object):
     def __init__(self, runner, host, port, user, password, private_key_file, *args, **kwargs):
         self.runner = runner
         self.host = host
+        self.ipv6 = ':' in self.host
         self.port = port
         self.user = user
         self.password = password
@@ -130,7 +131,10 @@ class Connection(object):
         ''' run a command on the remote host '''
 
         ssh_cmd = self._password_cmd()
-        ssh_cmd += ["ssh", "-tt", "-q"] + self.common_args + [self.host]
+        ssh_cmd += ["ssh", "-tt", "-q"] + self.common_args
+        if self.ipv6:
+            ssh_cmd += ['-6']
+        ssh_cmd += [self.host]
 
         if not self.runner.sudo or not sudoable:
             if executable:
@@ -232,12 +236,16 @@ class Connection(object):
             raise errors.AnsibleFileNotFound("file or module does not exist: %s" % in_path)
         cmd = self._password_cmd()
 
+        host = self.host
+        if self.ipv6:
+            host = '[%s]' % host
+
         if C.DEFAULT_SCP_IF_SSH:
             cmd += ["scp"] + self.common_args
-            cmd += [in_path,self.host + ":" + pipes.quote(out_path)]
+            cmd += [in_path,host + ":" + pipes.quote(out_path)]
             indata = None
         else:
-            cmd += ["sftp"] + self.common_args + [self.host]
+            cmd += ["sftp"] + self.common_args + [host]
             indata = "put %s %s\n" % (pipes.quote(in_path), pipes.quote(out_path))
 
         p = subprocess.Popen(cmd, stdin=subprocess.PIPE,
@@ -253,12 +261,16 @@ class Connection(object):
         vvv("FETCH %s TO %s" % (in_path, out_path), host=self.host)
         cmd = self._password_cmd()
 
+        host = self.host
+        if self.ipv6:
+            host = '[%s]' % host
+
         if C.DEFAULT_SCP_IF_SSH:
             cmd += ["scp"] + self.common_args
-            cmd += [self.host + ":" + in_path, out_path]
+            cmd += [host + ":" + in_path, out_path]
             indata = None
         else:
-            cmd += ["sftp"] + self.common_args + [self.host]
+            cmd += ["sftp"] + self.common_args + [host]
             indata = "get %s %s\n" % (in_path, out_path)
 
         p = subprocess.Popen(cmd, stdin=subprocess.PIPE,