Speeds up port tests

fix(ISO): properly use SHA256 file

* wip(nodes): sync back

* wip(backend): kill dead process

* wip(nodes): remove debug

* wip(nodes): improved remote start and rsync back

* Devel is release 0.10

* wip(networking): set per VM display and NAT IPs

issue #1397

* refactor(frontend): shows standalone machines

fix(volumes): convert to qcow2 old raw bases

* test(volumes): upgrade old raw volumes

close issue #1385

fix(volumes): properly define backing files

* test(volumes); tries to rebase a volume
* test(volumes); create test qcow2 volumes
* refactor(volumes): base for qcow2 volumes is copy
* test(volumes): base from base

closes issue #1381

refactor(backend): refresh backing store and driver

* refactor(test); more verbose output
* wip(volumes): get info in shared mode

issue #1324

closes issue #1307

feature(backend): run Ravada on Focal Fossa Ubuntu 20.04

* fix(backend): fixed qcow and iptables path
* fix(volumes): fixing qcow2 backing files
* refactor(nodes): find command properly when has args
* test(nodes): improved some tests on focal

issue #1324

fix(nodes): remove volatiles reviewed

also fixed small bug showing clones in frontend

fixes issue #1345

refactor(nodes): use Net::OpenSSH

* refactor(frontend): removed plugin renderfile
* refactor(volumes): qcwo2 format on clones

issue #1153

fix(backend): only clean when no base

* test(backend): volumes not removed after change hardware

fixes issue #1340

fix(backend): only clean when no base

* test(backend): volumes not removed after change hardware

fixes issue #1340

feature(backend): change number of started domains limit

closes issue #1166

fix(backend): checks node has enough memory

* refactor(test): now it only lists bases
* sets a minimal default memory if unset
* defaults to localhost if node full
* test fill memory

issue #1297

* fix(backend): check volume name isn't already used

issue #1285

* feature(backend): auto shutdown disconnected

issue #1280

The new set time request made some test fail because
it wasn't expected before.

issue #1279

issue #1279

When a domain has started in a remote node it already
has its volume there, make it reuse it.

issue #1274

fix(backend): try another node when missing files or crashed start

* Also request to re-prepare failed base
* make sure no duplicate set base
* refactor(frontend): set base status soon so users get their feedback. Reported by @gloriarodriguez
* refactor(frontend): Allow unset base with clones requested by @gloriarodriguez
* fix(backend): add indexes and cleanup db
* refactor(backend): properly start temporary domains

closes issue #1264

issue #1265

issue #1261

* removed some outdated files
* moved scripts to a proper location

Before we set internal startup. If a machine is in
two nodes it could get started in both nodes.

feature(KVM): change number of virtual CPUs

* change CPUs and memory
* refactor(test): change memory via hardware
* refactor(frontend): more responsive machine settings

refactor(backend): spinoff volumes

Base in frontend actions slightly improved. Need some work though

issue #852