Specify which key to use to access the cloud

Extend cloud management configuration with private_key_file.

Change-Id: I3f690848fe5b35e245efc454bf4b1f51b61a5e8a

examples/uno.py

@@ -22,6 +22,7 @@ def main():
             'driver': 'fuel',
             'address': 'fuel.local',
             'username': 'root',
+            'private_key_file': '~/.ssh/os_faults',
         },
         'power_management': {
             'driver': 'libvirt',

os_faults/ansible/executor.py

@@ -96,15 +96,22 @@ Options = namedtuple('Options',
 
 class AnsibleRunner(object):
     def __init__(self, remote_user='root', password=None, forks=100,
-                 ssh_common_args='', become=None):
+                 jump_host=None, private_key_file=None, become=None):
         super(AnsibleRunner, self).__init__()
 
         module_path = resolve_relative_path('os_faults/ansible/modules')
-        ssh_common_args = ' '.join([ssh_common_args, SSH_COMMON_ARGS])
+
+        ssh_common_args = SSH_COMMON_ARGS
+        if jump_host:
+            ssh_common_args += (
+                ' -o ProxyCommand="ssh -i %(key)s -W %%h:%%p '
+                '%(user)s@%(host)s"'
+                % dict(key=private_key_file, user=remote_user, host=jump_host))
 
         self.options = Options(
             connection='smart', password=password, module_path=module_path,
-            forks=forks, remote_user=remote_user, private_key_file=None,
+            forks=forks, remote_user=remote_user,
+            private_key_file=private_key_file,
             ssh_common_args=ssh_common_args, ssh_extra_args=None,
             sftp_extra_args=None, scp_extra_args=None,
             become=become, become_method='sudo', become_user='root',

os_faults/drivers/devstack.py

@@ -103,9 +103,11 @@ class DevStackManagement(cloud_management.CloudManagement):
 
         self.address = cloud_management_params['address']
         self.username = cloud_management_params['username']
+        self.private_key_file = cloud_management_params.get('private_key')
 
-        self.executor = executor.AnsibleRunner(remote_user=self.username,
-                                               become=True)
+        self.executor = executor.AnsibleRunner(
+            remote_user=self.username, private_key_file=self.private_key_file,
+            become=True)
         self.host = None
 
     def verify(self):

os_faults/drivers/fuel.py

@@ -269,14 +269,14 @@ class FuelManagement(cloud_management.CloudManagement):
 
         self.master_node_address = cloud_management_params['address']
         self.username = cloud_management_params['username']
+        self.private_key_file = cloud_management_params.get('private_key_file')
 
         self.master_node_executor = executor.AnsibleRunner(
-            remote_user=self.username)
+            remote_user=self.username, private_key_file=self.private_key_file)
 
         self.cloud_executor = executor.AnsibleRunner(
-            remote_user=self.username,
-            ssh_common_args='-o ProxyCommand="ssh -W %%h:%%p %s@%s"' %
-                            (self.username, self.master_node_address))
+            remote_user=self.username, private_key_file=self.private_key_file,
+            jump_host=self.master_node_address)
 
         self.cached_cloud_hosts = None
         self.fqdn_to_hosts = dict()