Version 2.4 in setup.py

Change-Id: I3d42be95b53560b31d5f5e3c89b68572c6ad8628
2.4.1 release

Change-Id: I52b777046949608a68a6d5c925aaba26c47084a9
Adding ability to define port to ping on

Change-Id: I618414c0005d7df1a1e41f359586f9f112def90c
Fix flake8 errors and add tox flake8 tests

Change-Id: I970c75fb6859a9c186636f111ac1e97b253e591c
Add default timeout to wait method to avoid
infinite loop

Change-Id: Iefd3db625c6b68d1ee95f121c628fe87ab64bbd2
Closes-Bug: #1349886
Devops version 2.4.2

Change-Id: I72cf7f8d609e2ed92ce2ad14704c42c14e40572c
Adding ability to turn on/off STP on bridges

Change-Id: I54f9309b2bd99e01faab3aa0872d94e09ecda0c2
Closes-Bug: #1355225
Reboot libvirt VM in case of boot failure

Reboot virtual machine after timeout (REBOOT_TIMEOUT
environment variable) if boot fails (according to BIOS).

Change-Id: I646121821e40f4ac069ec9817c2a1c11d50d4956
Closes-bug: #1356965
Merge "Reboot libvirt VM in case of boot failure"
Add variable for reboot timeout setting

Change-Id: I4a7f39d4a09844600684fa3d29ee099abdb526b0
Related-bug: #1356965
Merge "Add variable for reboot timeout setting"
Ability to turn hpet on/off from driver prefs + fix for reboot_timeout

Change-Id: I7e49a346eb31f04220ca40557e172064cbbaf90b
Devops version 2.4.3

Change-Id: I7e7727724b87f8861fe0f96305399c6c86fdf7e9
Merge "Devops version 2.4.3"
Support of 'bridge' network implemented for libvirt driver

Implementation of 'bridge' network type that allows to connect
VM to existing host bridge interface

Change-Id: I69ebbde21ce2c9e4063bc402e7ab23a359f173bf