Add connect to vmc vsphere sample

Sample output:

VM ID    VM Name
-------  ----------------------------------------------------------
vm-35    vcenter
vm-50    nsx-manager
vm-51    Node-7c1f558c-d026-4e48-be2b-f0bb6e6c220f-NSX-controller-1
vm-52    Node-db8fda3f-f611-4631-a3ac-700ab6412ea0-NSX-controller-2
vm-53    Node-844750bc-0191-45da-9a0d-1f849de2ea08-NSX-controller-3

Signed-off-by: Tianhao He <het@vmware.com>

samples/vmc/sddc/connect_to_vsphere_with_default_sddc_password.py

@@ -0,0 +1,101 @@
+#!/usr/bin/env python
+
+"""
+* *******************************************************
+* Copyright (c) VMware, Inc. 2018. All Rights Reserved.
+* SPDX-License-Identifier: MIT
+* *******************************************************
+*
+* DISCLAIMER. THIS PROGRAM IS PROVIDED TO YOU "AS IS" WITHOUT
+* WARRANTIES OR CONDITIONS OF ANY KIND, WHETHER ORAL OR WRITTEN,
+* EXPRESS OR IMPLIED. THE AUTHOR SPECIFICALLY DISCLAIMS ANY IMPLIED
+* WARRANTIES OR CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY,
+* NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE.
+"""
+
+__author__ = 'VMware, Inc.'
+__vcenter_version__ = 'VMware Cloud on AWS'
+
+import argparse
+
+from com.vmware.vapi.std.errors_client import NotFound
+from com.vmware.vmc.model_client import ErrorResponse
+from six.moves.urllib import parse
+from tabulate import tabulate
+from vmware.vapi.vmc.client import create_vmc_client
+from vmware.vapi.vsphere.client import create_vsphere_client
+
+
+class ConnectTovSphereWithDefaultCredentials(object):
+    """
+    Demonstrates how to connect to a vSphere in a SDDC
+    using the initial cloud admin credentials.
+
+    Sample Prerequisites:
+        - A SDDC in the org
+        - A firewall rule to access the vSphere
+    """
+
+    def __init__(self):
+        parser = argparse.ArgumentParser()
+        parser.add_argument('-r', '--refresh-token',
+                            required=True,
+                            help='VMware Cloud API refresh token')
+
+        parser.add_argument('-o', '--org-id',
+                            required=True,
+                            help='Organization identifier.')
+
+        parser.add_argument('-s', '--sddc-id',
+                            required=True,
+                            help='Sddc Identifier.')
+        args = parser.parse_args()
+
+        self.refresh_token = args.refresh_token
+        self.org_id = args.org_id
+        self.sddc_id = args.sddc_id
+
+    def run(self):
+
+        # Connect to VMware Cloud on AWS
+        vmc_client = create_vmc_client(self.refresh_token)
+        print('\n# Example: Successfully login to VMware Cloud on AWS instance')
+
+        # Check if the organization exists
+        orgs = vmc_client.Orgs.list()
+        if self.org_id not in [org.id for org in orgs]:
+            raise ValueError("Org with ID {} doesn't exist".format(self.org_id))
+
+        # Check if the SDDC exists
+        try:
+            sddc = vmc_client.orgs.Sddcs.get(self.org_id, self.sddc_id)
+        except NotFound as e:
+            error_response = e.data.convert_to(ErrorResponse)
+            raise ValueError(error_response.error_messages)
+
+        # Get VC hostname
+        server = parse.urlparse(sddc.resource_config.vc_url).hostname
+
+        # Connect to vSphere client using the initial cloud admin credentials.
+        # Please use the new credentials to login after you reset the default one.
+        vsphere_client = create_vsphere_client(server,
+                                               username=sddc.resource_config.cloud_username,
+                                               password=sddc.resource_config.cloud_password)
+        print("\n# Example: Successfully connect to vCenter at '{}'".format(server))
+
+        # List VMs in the vSphere instance
+        vms = vsphere_client.vcenter.VM.list()
+        table = []
+        for vm_summary in vms:
+            table.append([vm_summary.vm, vm_summary.name])
+        print('\n# Example: List VMs in the vSphere')
+        print(tabulate(table, ['VM ID', 'VM Name']))
+
+
+def main():
+    connect_to_vsphere = ConnectTovSphereWithDefaultCredentials()
+    connect_to_vsphere.run()
+
+
+if __name__ == '__main__':
+    main()