[A recent breaking change upstream in Golang's crypto
library](e4e2799dd7)
has broken SSH connectivity for a few builders:
```
==> qemu: Waiting for SSH to become available...
2017/05/20 16:23:58 ui: ==> qemu: Waiting for SSH to become available...
2017/05/20 16:23:58 packer: 2017/05/20 16:23:58 [INFO] Attempting SSH connection...
2017/05/20 16:23:58 packer: 2017/05/20 16:23:58 reconnecting to TCP connection for SSH
2017/05/20 16:23:58 packer: 2017/05/20 16:23:58 handshaking with SSH
2017/05/20 16:23:58 packer: 2017/05/20 16:23:58 handshake error: ssh: must specify HostKeyCallback
2017/05/20 16:23:58 packer: 2017/05/20 16:23:58 [DEBUG] SSH handshake err: ssh: must specify HostKeyCallback
2017/05/20 16:24:05 packer: 2017/05/20 16:24:05 [INFO] Attempting SSH connection...
2017/05/20 16:24:05 packer: 2017/05/20 16:24:05 reconnecting to TCP connection for SSH
2017/05/20 16:24:05 packer: 2017/05/20 16:24:05 handshaking with SSH
2017/05/20 16:24:05 packer: 2017/05/20 16:24:05 handshake error: ssh: must specify HostKeyCallback
2017/05/20 16:24:05 packer: 2017/05/20 16:24:05 [DEBUG] SSH handshake err: ssh: must specify HostKeyCallback
```
Specifying HostKeyCallback as insecure should make things work again
and would make sense for packer's use case.
If using a builder that has an http server set up for file transfer,
expose the connection info to the shell provisioner through the environment
variable PACKER_HTTP_ADDR.
Closes#2869
To enable nested virtualization, mac spoofing, no dynamic memory and at least 4gb of ram should be set for the vm. Set warning if this has not been done.
Detected Virtualization Extensions are supported by the machine your are running on, as it only works for Windows 10 and Windows Server 2016 onwards.
<leftAlt>
<leftCtrl>
<leftShift>
<rightAlt>
<rightCtrl>
<rightShift>
Add type support for combinations of ctr, alt, shift with (only use lower case characters with this):
<leftAltOn>
<leftCtrlOn>
<leftShiftOn>
<leftAltOff>
<leftCtrlOff>
<leftShiftOff>
<rightAltOn>
<rightCtrlOn>
<rightShiftOn>
<rightAltOff>
<rightCtrlOff>
<rightShiftOff>
Included the build step to download ISO, so iso_urls works properly now.
Online activation should be done via provisioner
Installation of integration services should be done via provisioner
Cleaned up the way dvd drives are mounted and unmounted (still need to implement feature to find unused drives before adding a new one)
Cleaned up the way floppies are mounted and unmounted
