[DPE-10062] Port Patroni/cluster code to single kernel (#1788)

* Redo

* Disable unit tests

* Test without psycopg2

* Pass refresh

* Double render

* Wrong dir setup

* Cleanup

* Unit tests WIP

* Reenable most unit tests

* Switch to yaml rendering

* Enable all unit tests

* Sync lib

* Don't pull client on init

* Spaced ips

* Move cluster exceptions to kernel

* Trace blocked message

* Trace blocked

* Reduce timeout

* Sync lib

* Sync lib

* Lib cleanup

* Switch to released lib

Author: dragomirp

charmcraft.yaml

@@ -51,7 +51,7 @@ parts:
     source: .
     after:
       - poetry-deps
-    poetry-export-extra-args: ['--only', 'main,charm-libs,single-kernel']
+    poetry-export-extra-args: ['--only', 'main,charm-libs']
     build-packages:
       - libffi-dev  # Needed to build Python dependencies with Rust from source
       - libssl-dev  # Needed to build Python dependencies with Rust from source

poetry.lock

@@ -21,9 +21,7 @@ charm-refresh = "^3.1.0.2"
 charmlibs-snap = "^1.0.1"
 charmlibs-systemd = "^1.0.0.post0"
 charmlibs-interfaces-tls-certificates = "^1.8.3"
-
-[tool.poetry.group.single-kernel.dependencies]
-postgresql-charms-single-kernel = "16.3.0"
+postgresql-charms-single-kernel = {extras = ["postgresql", "vm"], version = "16.3.1"}
 
 [tool.poetry.group.charm-libs.dependencies]
 # data_platform_libs/v0/data_interfaces.py
@@ -78,6 +76,7 @@ allure-pytest-default-results = "^0.1.4"
 tomli = "^2.4.1"
 tomli-w = "^1.2.0"
 pysyncobj = "*"
+postgresql-charms-single-kernel = "*"
 
 [tool.poetry.group.build-refresh-version]
 optional = true