Bump replication plugin to master
Bump replication plugin to master

Since there's no stable-3.6 branch for replication, a number of fixes on
the master branch haven't been automatically picked up by a submodule
subscription bump. There are no new features, so it's safe to update to
the tip.

$ git log --oneline --no-merges 0e1effafee..master
590f9bac Destination: skip unnecessary String.format()
419845f0 Fix URI double escaping
6b523d6b Demote Files.list() errors when distributor is enabled
ced31c0c Annotate methods that return a definitely null value with @Nullable
20f1c213 Demote rename errors when distributor is enabled
f1aefa28 docs/config: monospace format settings
a60684d0 docs/config: add languages to code blocks
8d774a72 docs: link directly to remote.NAME.slowLatencyThreshold setting
c1290d04 docs/extension-point: use consistent heading markup
e7a4c97e docs/extension-point: add code block languages
203693d4 docs/cmd-start: add code block languages, monospace formatting
6ace352d docs/cmd-start: replace tabs with spaces
ceeed223 docs/cmd-list: add languages to code blocks
97bdaf57 Fix FloggerLogString issues flagged by error prone
bdc7e6b3 Fix scheduling of tasks using the old storage format
39294214 Use switch-statement in ReplicateRefUpdateTypeAdapter.read()
6a0e9874 ReplicateRefUpdate: remove unnecessary factory method
5a517528 Allow to parse stored replication tasks using the "ref" key
c71f0c2b Fail if an unknown field is found in the stored replication task
b93b4823 Move tests for RefUpdateTypeAdapter to proper class
fd3b7329 ReplicationQueue: Remove unused import
6e04fc32 Do not retry replication when local repository not found
1a4e28a5 docs/metrics: fix rendering of text in angle brackets

Change-Id: If13f7492364e91ec8380d3f3a9fc7478c66319c7
Release-Notes: Fixed several replication plugin bugs and improved docs

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