refactor: standardize Dockerfile and build script structure

Standardize all RPM packages to use a consistent build pattern:
- Simple Dockerfiles that copy resources/ and call build.sh
- Move all build logic to resources/build.sh scripts
- Consolidate nfpm.yaml and scripts into resources/ directory
- Update base image to almalinux9-rpmbuilder for consistency

Changes:
- Refactored 37 packages total (simple + complex)
- HashiCorp tools: consul, vault, terraform, terragrunt, packer, nomad, nomad-autoscaler
- Development tools: g10k, etcd, nfpm, ruff, uv, unrar, nzbget, boilerplate
- VictoriaMetrics: vlutils, vmutils, victoria-logs
- Network tools: cni-plugins, consul-cni, unkin-ca-certificates
- Jellyfin suite: jellyfin-web, jellyfin-server, jellyfin-ffmpeg-bin
- System packages: puppet-initial, incus

This standardization improves maintainability and consistency across
the entire RPM build system while preserving all existing functionality.

rpms/etcd/resources/nfpm.yaml

@@ -0,0 +1,47 @@
+# nfpm.yaml
+
+name: etcd
+version: ${PACKAGE_VERSION}
+release: ${PACKAGE_RELEASE}
+arch: amd64
+platform: linux
+section: default
+priority: extra
+description: "A distributed, reliable key-value store for the most critical data of a distributed system."
+
+maintainer: https://etcd.io/
+homepage: https://etcd.io/
+license: Apache-2.0
+
+disable_globbing: false
+
+replaces:
+  - etcd
+  - etcdctl
+  - etcdutl
+
+provides:
+  - etcd
+  - etcdctl
+  - etcdutl
+
+# Files to include in the package
+contents:
+  - src: /app/etcd
+    dst: /usr/bin/etcd
+    file_info:
+      mode: 0755
+      owner: root
+      group: root
+  - src: /app/etcdctl
+    dst: /usr/bin/etcdctl
+    file_info:
+      mode: 0755
+      owner: root
+      group: root
+  - src: /app/etcdutl
+    dst: /usr/bin/etcdutl
+    file_info:
+      mode: 0755
+      owner: root
+      group: root