Accomodate grubport and grub2

Bug: 973092
Fix column sorting

Bug: 972397
Change-Id: I80f97c6d8853391314ec94d3d48b965371f024cf
Add a how-do-i entry for system inventory

Change-Id: I5b95fa0263bf74e84e7e5cc0593fb0edeb489d1d
Serialize processing of recipes to remove deadlocks

Bug: 952587
Change-Id: I434eb1f2f0209f98e6cce9ec8adc0b1f5b56d6ae
Merge "Serialize processing of recipes to remove deadlocks" into release-0.13
Merge "Add a how-do-i entry for system inventory" into release-0.13
Merge "Accomodate grubport and grub2" into release-0.13
Merge "Fix column sorting" into release-0.13
Remove implicit lab controller XML-RPC retries

Several of the calls from the lab controllers back to the main
server aren't idempotent, so retrying isn't safe in general.
The way kobo does retries is also impossible to debug (it writes
to sys.stderr instead of using the logging subsystem, which
means the Beaker lab controller logs don't capture the info)

Dropping the retries entirely will help to diagnose network
stability issues, and will also allow retries to be selectively
reintroduced where they make sense.

Bug: 974352
Change-Id: I33ee709a959707d23125898207101e5c8ee96124
docs: generic (non-version-specific) upgrade instructions

Bug: 973893
Change-Id: Ib9f0c0842e9243182e95dc55f08c37ebd3f1254c
Merge "docs: generic (non-version-specific) upgrade instructions" into release-0.13
docs: spell out the sequence of events for upgrade outages

Bug: 973893
Change-Id: I9e1b0ed993077a383584193230d49b6129a38fb5
re-init krb ticket when we notice it expires

At this time, no test for this patch is available

Bug: 968608
Handle clearing a large running commands backlog

Bug: 974319
Change-Id: Id1b30fd24d70560d1f0cce51a786659dee9dbd68
Merge "Handle clearing a large running commands backlog" into release-0.13
Merge "re-init krb ticket when we notice it expires" into release-0.13
docs: fix broken intersphinx hyperlink

The intersphinx extension was producing the wrong href for the link from
whats-new/index to the design proposals. Replaced with a hardcoded
hyperlink for now.

https://bitbucket.org/birkenfeld/sphinx/issue/1204/

Change-Id: I09d87499e4831c8168dccfb315fc14e77554e3a4
Restore XML-RPC retries, with better logging

Bug: 974352
Change-Id: I72ccf3e127d45c5ab9917a92663cbbfdfafcbe9b
Merge branch 'release-0.13'