Prevalidates hardware resources on Linux platforms for Virtualbox and
VMware builders. This is currently only available on Linux, as enabling
for both Darwin and Windows platforms, relies on cgo bindings that would
prevent effective cross-compilation.
Packer will now fail to build and validate templates if the template is
requesting that the VM to be created would allocate more system
resources than the host system has available.
This _however_ doesn't catch parallel builds that overflow the hosts
resources, will probably still need a better error message for VM's
failing to boot in that case.
Example Outputs:
```
$ $GOPATH/bin/packer build -debug ./vmware-iso.json
Debug mode enabled. Builds will not be parallelized.
vmware-iso output will be in this color.
2 error(s) occurred:
* Unavailable Resources: RAM - Requested - 204800000MB - Available 21721MB
* Unavailable Resources: Disk - Requested - 4000000000MB - Available 76701MB
```
```
$ $GOPATH/bin/packer build -debug ./vbox-iso.json
Debug mode enabled. Builds will not be parallelized.
virtualbox-iso output will be in this color.
2 error(s) occurred:
* Unavailable Resources: RAM - Requested - 10240000MB - Available 21721MB
* Unavailable Resources: Disk - Requested - 1000000000MB - Available 76701MB
```
The ISO builders (parallels, qemu, virtualbox, and vmware) had too
much common code which needed to be maintained separately. This change
moves that code to a common ISO configuration.
If the access_key or secret_key were loaded from
somewhere other than the packer file then
ScrubConfig can get called to scrub "" and "".
This results in very long output:
<Filtered><<Filtered>F<Filtered>i...
Don't do that.
This patch will allow to fix the following bug much faster:
```
1 error(s) occurred:
* Unknown configuration key: output_directory
```
Related configuration:
```
"output_directory ": "build/sl_base/",
```
After the patch, the error reporting will be:
```
1 error(s) occurred:
* Unknown configuration key: "output_directory¤"
```
Fixes the following vet reports:
common/step_create_floppy_test.go:79: possible formatting directive in Fatal call
common/step_create_floppy_test.go:89: possible formatting directive in Fatal call
common/step_create_floppy_test.go:180: possible formatting directive in Fatal call
common/step_create_floppy_test.go:190: possible formatting directive in Fatal call
Change the default behavior from requesting a PTY when executing a
command with the ssh communicator to requesting a PTY only when
configured to do so.
Update the vmware builders to be fully backward compatible with the new
behavior.
Chris Bednarski
Jake Champlin
Mark Peek
Mitchell Hashimoto
Mitchell Hashimoto
Vasiliy Tolstov
Clint Shryock
jszwedko
Josh Bleecher Snyder
Grégoire Pineau
Emil Hessman
Billie H. Cleek
Seth Vargo
Jason A. Beranek
Ross Smith II