STF 1.5.6 release

- sg-core is now built on ubi9
- Update to Golang to 1.21.13
- Github Actions now run on ubuntu-latest
- Pin Devstack version to stable/2024.2. New OpenStack versions deprecated the AMQP driver in oslo.messaging and this breaks sg-core testing
- Parse custom labels from ceilometer metadata. Metrics without the user_metadata field are unchanged (current behavior is preserved). When the user_metadata field is present in the metric received from ceilometer it's parsed and each key=value pair is used as a separate metric label

Merge pull request #141 from infrawatch/release-prep-1.5.5

STF 1.5.5 release ops

Merge pull request #129 from infrawatch/release-prep-1.5.4

STF 1.5.4 release ops

Merge pull request #120 from infrawatch/import/stf153

Import master to stable-1.5

Naive revert to 1.18 (#106)

Move to golang 1.19 (#104) (#105)

* Move to golang 1.19

* Found a bunch of 1.15 references in the CI machinery

* Upgrade json-iterator to 1.1.12

* Upgrade to golangci-lint 1.50

* Solve staticcheck lint

* gosec lint

* Remove deprecated linters to clear warnings

* Missing time import

* Warning from revive linter

(cherry picked from commit d343b27)

Add udp transport to socket plugin (#101)

* Add udp transport to socket plugin

* Make unix socket default

* Fix linting issues

* Incorporate PR comment suggestions

* Fix unit test config after previous changes

Add udp transport to socket plugin (#101)

* Add udp transport to socket plugin

* Make unix socket default

* Fix linting issues

* Incorporate PR comment suggestions

* Fix unit test config after previous changes

Increase reading buffer size on large messages (#74) (#83)

* Increase reading buffer size on large messages  (#74)

When larger than MaxBufferSize messages are being sent, the whole message processing
is failing badly. This can easily happen when socket plugin is used in Ceilometer metrics
or events processing.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2016460
(cherry picked from commit f13e241)

* Ci opstools fix (#85) (#87) (#89)

* Fix centos-opstools repo in CI

* Avoid gpgcheck for centos repo

Co-authored-by: Leif Madsen <[email protected]>
Co-authored-by: Matthias Runge <[email protected]>
(cherry picked from commit 04fc691)
(cherry picked from commit 33d4121)

Co-authored-by: Martin Mágr <[email protected]>

Co-authored-by: Leif Madsen <[email protected]>

Increase reading buffer size on large messages (#74) (#84)

* Increase reading buffer size on large messages  (#74)

When larger than MaxBufferSize messages are being sent, the whole message processing
is failing badly. This can easily happen when socket plugin is used in Ceilometer metrics
or events processing.

Resolves: rhbz#2016460

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=2016460
(cherry picked from commit f13e241)
(cherry picked from commit 4af768f)

* Ci opstools fix (#85) (#88) (#90)

* Fix centos-opstools repo in CI

* Update .github/workflows/integration.yml

Co-authored-by: Leif Madsen <[email protected]>
Co-authored-by: Matthias Runge <[email protected]>

(cherry picked from commit 04fc691)
(cherry picked from commit 63f8c2c)
(cherry picked from commit ecd07f5)

Co-authored-by: Martin Mágr <[email protected]>

Co-authored-by: Leif Madsen <[email protected]>