misc/git-hooks/pre-receive: clean-up tmp files on exit or err (#2211)
misc/git-hooks/pre-receive: clean-up tmp files on exit or err (#2211)

* misc/git-hooks/pre-receive: add clean-up to catch and remove all tmp files on exit

* misc/git-hooks/pre-receive: ignoring errors for removing tmp files on clean_up

tsuru/tsuru,tsuru/tsuru,guilhermebr/tsuru,guilhermebr/tsuru,tsuru/tsuru,guilhermebr/tsuru,guilhermebr/tsuru,tsuru/tsuru