[tracker] (8 commits) ...Merge branch 'sam/test-fixes' into 'master'

[Sam Thursfield <sthursfield src gnome org>]

Summary of changes:

  c6194e0... trackertestutils: Remove unneeded imports (*)
  f3913b1... trackertestutils: Fix tracker-sandbox startup when installe (*)
  fa4aad3... trackertestutils: Add debugging hint (*)
  9f10204... trackertestutils: Fix crash if miner-fs isn't running (*)
  68fe90a... trackertestutils: Fix some issues with D-Bus name changes (*)
  b2f922a... trackertestutils: Make the graph parameter explicit (*)
  44cef25... trackertestutils: Separate await_update() into two function (*)
  15dac2a... Merge branch 'sam/test-fixes' into 'master'

(*) This commit already existed in another branch; no separate mail sent