8u/11u repo access and Jira changes

[Andrew Haley]

https://hg.openjdk.java.net/jdk8u/jdk8u is now writable by all JDK 8u
Reviewers and Committers. HOWEVER, don't commit anything to
it. Instead, commit to jdk8u-dev.

hgupdater is set to openjdk8u211 for jdk8u.

jdk-updates/jdk11u-dev now exists, and it's the commit repo for
jdk11u.

jdk8u/jdk8u-jfr-incubator/ now exists for JFR integration. As far as I
can see, dicussion is still in progress.  Right now, a bugid and
review is required. Do we want that for JFR? We could relax the
requirement while work is in progress, and commit the JFR port as a
single change later.

hgupdater is not set for jdk8u-jfr-incubator. I think that's probably
the right for the time being.

-- 
Andrew Haley
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
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