Add VM bootstrap script

Notes about bootstrap in private cloud

1. If the user does not enter the FQDN on the General tab when editing the VM, the platform will try to set the FQDN using the name or ID attribute of the VM, and the domain of the VM's networks, or the localhost domain

2. If DHCP is not used in your datacenter, the network configuration of the VM can be read from cloud-init, so you do not need to configure the network or allow access to the VM

3. Abiquo uses the ConfigDrive DataSource for cloud-init. Reference: http://cloudinit.readthedocs.io/en/latest/topics/datasources/configdrive.html

Notes about startup scripts in AWS

1. In AWS you must always select a guest setup option

2. In AWS, for Windows, depending on the template and its guest setup option, the script format is:

   1. cloudbase_init: cloud-init or shellscript

   2. ec2launch and ec2config: you must have the following tags at the start and end of your script

      1. batch script, use <script></script>

      2. powershell script, use <powershell></powershell>

   3. ec2launch v2: yaml format. See https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/ec2-windows-user-data.html#user-data-yaml-scripts.
      If your script format is invalid, AWS will try ec2launch and ec2config format. See: https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/ec2-windows-user-data.html