Add ability to run nailgun tests in parallel on ci

TEST_NAILGUN_DB=nailgun_gw0 nosetests nailgun/test

nosetests uses entry_points, so it requires to run command:

python setup.py develop

Change-Id: Ie5a24d970f73ef35b1c4e61bbc4b2a738d96b34f
Closes-Bug: #1282565
Remove outdated mentions of CentOS 6.4

Change-Id: I8a546ef38fc1338f7fe2b18c1fd039ddaf2a36e5
Rearrange network models parameters

Implements: blueprint nailgun-rearrange-network-parameters

Change-Id: Ib70d1764e783a32423df0d136e8075a66d7cd773
Network configuration UI refactoring

blueprint ui-network-configuration-refactoring

Change-Id: I8db049625aff69ed91d071efd3416b3f9b680c0c
Sync requirements versions with osci

Change-Id: Ib004b5171315c89a4bc51ba5e02c6915e7886f6e
Fix for enormous progress bar rising of deployment task

Weight for node deletion subtask of deployment supertask in
ApplyChangesTaskManager added. New integration tests added. Some
refactoring to TaskHelper performed: formula that calculate progress for
supertask has been moved to separate class method.

Change-Id: I2143f9999320c66b49940844d5b1b7a7f5e2a77c
Closes-Bug: #1286124
Docs nailgun/UI customization

Change-Id: Icac3b45cff5df3e512cc42e6ee582a48269b9b82
Nailgun base objects autodoc & small refactoring

Related to blueprint nailgun-objects-flow

Change-Id: Ia38d9bfcfe351ef96dc47180dc9e94ea2eef55e9
Merge "Docs nailgun/UI customization"
Pointer cursor fix

Closes-Bug:#1298956

Change-Id: I6b9cb78709405febd54872eac41317d45add090b
Quick fix for cluster deletion timeout test

Change-Id: I8d8caeb69a0252afa2ac67313ec94091e798a597
Closes-Bug: #1305734
Fuelclient major refactoring

 * package structure
 * some implementation ideas
 * a lot of working functions
 * fixed Fuelclient tests
 * fixed action validation
 * fixed formatting and pep8
 * fixed copyright
 * fixed unnecessary request during deployment

 Implements: blueprint fuelclient-refactoring

Change-Id: Ice7f96273afb5d96e7970acfc45c61bab620aaed
Merge "Remove outdated mentions of CentOS 6.4"
Fix javascript error on settings save failure

Change-Id: Ieb4273d8b3d35722a4da9e647b6ae6f08eff8bf9
Support of setting "values" restrictions (dependencies, conflicts)

Closes-Bug:#1301934

Change-Id: Ia7fd14285b4b15039467f0770d51f61db11e2381
Merge "Add ability to run nailgun tests in parallel on ci"
Merge "Quick fix for cluster deletion timeout test"
Merge "Fuelclient major refactoring"
Merge "Fix javascript error on settings save failure"
Merge "Nailgun base objects autodoc & small refactoring"