[1251632] fix dev-doc Nailgun sections
[1251632] fix dev-doc Nailgun sections

Nailgun test-related section is fixed in part of python tests.

Closes-Bug: #1251632

Change-Id: Ibb576946901512defde48e6d918b5f08a14b756c

nebril/fuel-web,stackforge/fuel-web,nebril/fuel-web,eayunstack/fuel-web,zhaochao/fuel-web,koder-ua/nailgun-fcert,nebril/fuel-web,eayunstack/fuel-web,SmartInfrastructures/fuel-web-dev,prmtl/fuel-web,stackforge/fuel-web,nebril/fuel-web,SmartInfrastructures/fuel-web-dev,huntxu/fuel-web,koder-ua/nailgun-fcert,huntxu/fuel-web,huntxu/fuel-web,SmartInfrastructures/fuel-web-dev,prmtl/fuel-web,eayunstack/fuel-web,zhaochao/fuel-web,zhaochao/fuel-web,prmtl/fuel-web,SmartInfrastructures/fuel-web-dev,koder-ua/nailgun-fcert,stackforge/fuel-web,eayunstack/fuel-web,huntxu/fuel-web,SmartInfrastructures/fuel-web-dev,eayunstack/fuel-web,zhaochao/fuel-web,zhaochao/fuel-web,prmtl/fuel-web,huntxu/fuel-web,prmtl/fuel-web,koder-ua/nailgun-fcert,nebril/fuel-web