Similar to change Ibe94d5c3e8717c381aee4472d84379cf6d31b336,
the nodepool-functional-py35-src and nodepool-functional-base
playbooks are also unused at this point.
Change-Id: I02359f0e147aed429643f8e316f997a22545959c
Changes nodepool-functional-py35 and nodepool-functional-py35-src
to use the native devstack job and not the legacy job.
Change-Id: I3d97d83360816001da0f599d95b13eae3abb6c96