slapos/slap/slap.py: Fix ComputerPartition.setConnectionDict. Declare connection_parameter_hash explicitly, UnboundLocalError may occur.

rename checkPromises to checkPromiseList, and move the method to grid/utils so it can be imported by monitor to check promises.


`raise_on_failure` will be used to check all promises without raise. All promises result will be returned.

`profile` True/False will log promise execution time.

/reviewed-on !35

  The API uses code which is part of the new VIFIB 2.0 API, and
  uses simpler scripts and JSON for the exchange of information.

  This API may change again in futher future, but backward compatibility will be kept with the current implementaion

We only had a global "pidfile" configuration, but it's more conveniant
to be able to configure different pidfile for each command (software,
instance, report)

The supported config file would look like:

```
[slapos]
pidfile_software = /path/to/pid
pidfile_instance = /path/to/pid
pidfile_report = /path/to/pid

```



/reviewed-on !29

  Include a test for fetch configuration

  Conflicts on namespace can easily break this feature, so pick the
  template directly is safer.

This pluging can be used a add a script which wipe data before the partition is removed
The script run after all partition services are stopped. The script is ran by supervisord
then slapos node report will wait until it finish before destroy the partition.

/reviewed-on !23

This pluging can be used a add a script which wipe data before the partition is removed
The script run after all partition services are stopped. The script is ran by supervisord
then slapos node report will wait until it finish before destroy the partition.

/reviewed-on !22

Move manager.instance to the part of code which doesn't get preempted 

/reviewed-on !21

  This version include initial plugin system and cgroups integration.

  We also included a significant change for provide the partitions network informations, which now
  don't require to come from slapos master anymore, so it is possible to make local extensions.

-  Move all Computer attribute initialization into Computer constructor
-  Rename 'construct' to 'format' because we are in slap.format
-  Introduce Manager base class
-  Implement CGroupManager to take care of cgroup's cpuset

-  Add TUN class
-  Check Interface is a bridge before performing bridgey operations
-  Replace outdated 'tunctl' binary with 'ip tunctl'

  This raise my lead to a significant change on the API, which
  may require to refactor several tests, to this change keep s a
  backward compatible API.

This reverts commit 889711ed

This approach to solve checking of commands by logging is wrong. It can lead to malicious commands being executed so this test is no longer reliable.

We just should not test issued commands - test should use an isolated environment and then inspect the impact.

/reviewed-on !15

Fix parameters order to use request()

/cc @rafael @alain.takoudjou 

/reviewed-on !13

When creating a TAP interface we try to add it to a bridge no mater what kind of the external interface is. Check whether it is a bridge first.

/reviewed-on !12