Merge 2.9 into develop

[barrettj12]

Pull requests:

• [JUJU-1559] Removes the requirement to disable v6 for lxd. #14424
• [ck test] increase teardown timeout to 60m #14428
• [ck test] kill controller afterwards #14430
• Increment juju to 2.9.34 #14431
• Fix controller name in ck test teardown #14433
• Kill controller at end of ck test #14434
• [JUJU-1570] Added agent-metadata-url and agent stream to pre_bootstrap #14437
• Add credential format example for GCE for add-credential command; #14439
• [JUJU-1579] Fix "no matching agent binaries available" error for arm64 tests #14440
• [JUJU-1583] Fixed test-deploy-test-deploy-bundles-aws for arm64 tests #14442
• [JUJU-1585] [refresh] correct error when local charm not found #14444
• [JUJU-1587] Fix test race in dummy provider #14445
• [backport] Add timeout to wait_for in bash tests #14446
• [JUJU-1588] Added 'yq' package bash-based testing system #14448
• [JUJU-1594] Fixed test-export-bundles-deploy-with-fixed-revisions whitespaces issue #14453
• Updated github.com/juju/charm/v9 to v9.0.4.

Conflicts:

• apiserver/common/tools_test.go
• cmd/juju/commands/upgradecontroller_test.go
• cmd/juju/commands/upgrademodel_test.go
• go.mod
• go.sum
• scripts/win-installer/setup.iss
• snap/snapcraft.yaml
• version/version.go

Note: ignoring #14427 since this is due to be reverted (see #14449).

[barrettj12]

/merge