Initial commit of a pytest pacman plugin

This plugin aims to provide an easy way to create and use a pacman
localdb. For projects depending on pacman local db such as pyalpm or
syncdb's such as archweb.
1 job for master in 25 seconds (queued for 3 seconds)
Status Name Job ID Coverage
failed test #3207


Name Stage Failure
test Test
==================================== ERRORS ====================================
________________________ ERROR at setup of test_localdb ________________________
ScopeMismatch: You tried to access the 'function' scoped fixture 'core_data' with a 'session' scoped request object, involved factories
test/ def localdb(tmpdir_factory, core_data, generate_localdb)
test/ def core_data()
=========================== short test summary info ============================
ERROR test/
=============================== 1 error in 0.01s ===============================
ERROR: Job failed: exit code 1