Rather than copying images, use the snapshot option to qemu. This fixes a regression
caused by the recent runqemu changes where the wrong images were being testes since
the image is copied without the qemuboot.conf file. This means the latest image is
found by runqemu rather than the specified one, leading to various confused testing
results.

It could be fixed by copying more files but use snapshot mode instead.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Using kvm can provide significant speedups when running qemux86* machines
on an x86* host. Enabled by using the new QEMU_USE_KVM variable.

[YOCTO #9298]

Signed-off-by: Bill Randle <william.c.randle@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Now Runner's support extra_bootargs for the kernel so add
extra_bootparams to the start() methods to avoid exception.

Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

Add ability to specify extra_bootargs (kernel cmdline) in order to enable systemd
debug log in images that enables systemd init.

[YOCTO #9299]

Signed-off-by: Aníbal Limón <anibal.limon@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

This patch contains all the other misc pieces of the transition to
python3 which didn't make sense to be broken into individual patches.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Added 'wic' to the list image types supported by targetcontrol.

This is a preparation for booting and testing wic images
with oe-selftest.

[YOCTO #8498]

(From OE-Core rev: 7dda053fbd1ea1354b7720cfa691470ba88ef5b9)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Added new parameter 'ssh' to targetcontrol 'start' method
to be able to test images without running ssh server.

[YOCTO #8498]

(From OE-Core rev: 1c3c66aadd43092bc19242b0651ee810cc31fe7c)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

Currently, if qemu segfaults, the tests merrily continue trying to execute
which takes time for them to timeout and is a bit silly. Worse, no logs about
the segfault are shown to the user, its silent!

This patch tries to unravel the tangled web of issues and ensures that we:

* install a SIGCHLD handler which tells the user qemu exited
* check if qemu is running, if it isn't fail the test outright
* don't leave processes behind in sshcontrol which would hold
  bitbake.lock and block shutdown

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

This adds an instance of HostDumper to qemurunner,
with this instance now is possible to get dumps
from the host when there is an error.

This adds dump points in the next cases:
    - runqemu exits before seeing qemu pid
    - Fail to get qemu process arguments
    - Not reach login banner before timeout
    - qemu pid never appears

This also modifies the constructors of BaseDumper,
HostDumper and TargetDumper, they don't require
the datastore anymore, but the feature to replace
datastore variables has been lost (never used)

[YOCTO #8118]

Signed-off-by: Mariano Lopez <mariano.lopez@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

It makes sense to separate the dump commands from the
oeRuntimeTest class, this way it can be used in all
the test context.

These are the changes included in this patch:

    - Created classes: BaseDumper, HostDumper, TargetDumper
    - Create an instance of HostDumper in imagetest.bbclass
      and add it to TestContext class, this way any class
      that have access to the TestContext would be able
      to dump logs from the host
    - Create an instance of TargetDumper in QemuTarget
      class after get the runner, this way it is
      accessible during the tests.

[YOCTO #8118]

Signed-off-by: Mariano Lopez <mariano.lopez@linux.intel.com>