Fix SLO re-upload

Previously, if you uploaded a file as an SLO then re-uploaded it
with the same segment size and mtime, the second upload would
go delete the segments it just (re)uploaded. This was due to
us tracking old_slo_manifest_paths and new_slo_manifest_paths
in different formats; one would have a leading slash while the
other would not.

Now, normalize to the stripped-slash version so we stop deleting
segments we just uploaded.

Change-Id: Ibcbed3df4febe81cdf13855656e2daaca8d521b4
(cherry picked from commit 9021a58c240e156f54ffafdc4609868f348d3ebc)
(cherry picked from commit 2cd8b86075997f2997118bd92286849ddb0c93d7)
(cherry picked from commit d76aa4d810f948279ccffa6d3255f7200aed0323)

0 files changed, 0 insertions, 0 deletions