test/support: Exclude tmp dir from ContextDir#tree()
test/support: Exclude tmp dir from ContextDir#tree()

nono/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,nono/cozy-desktop,cozy-labs/cozy-desktop,nono/cozy-desktop,cozy-labs/cozy-desktop,nono/cozy-desktop