feat: add OpenBao plugin RPMs for consul and nomad secrets engines

- Add openbao-plugin-secret-consul v0.1.0 RPM configuration
- Add openbao-plugin-secret-nomad v0.1.4 RPM configuration
- Add openbao-plugins v1.0.0 meta package that installs both plugins
- Plugins install to /opt/openbao-plugins directory
- Include pre-install scripts to create plugin directory
- Support for EL8 and EL9 distributions

rpms/openbao-plugins/1.0.0/release

@@ -0,0 +1 @@
+1

rpms/openbao-plugins/Dockerfile

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+FROM git.unkin.net/unkin/almalinux9-rpmbuilder:latest
+
+# Create output directory for RPMs
+RUN mkdir -p /app/dist
+
+# Set working directory
+WORKDIR /app
+
+ARG PACKAGE_RELEASE
+ENV PACKAGE_RELEASE=${PACKAGE_RELEASE}
+ARG PACKAGE_VERSION
+ENV PACKAGE_VERSION=${PACKAGE_VERSION}
+
+# Copy resources from the context into the container
+COPY resources /app/resources
+
+# Default command to build RPMs
+CMD /app/resources/build.sh

rpms/openbao-plugins/metadata.yaml

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+name: openbao-plugins
+release: 1
+version: 1.0.0
+github: openbao/openbao-plugins
+build:
+- distro: el/8
+  image: git.unkin.net/unkin/almalinux8-rpmbuilder:latest
+- distro: el/9
+  image: git.unkin.net/unkin/almalinux9-rpmbuilder:latest

rpms/openbao-plugins/resources/build.sh

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+#!/usr/bin/bash
+
+# This is a meta package - no binaries to download
+# Build the RPM
+nfpm pkg --config /app/resources/nfpm.yaml --target /app/dist --packager rpm

rpms/openbao-plugins/resources/nfpm.yaml

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+# nfpm.yaml
+
+name: openbao-plugins
+version: ${PACKAGE_VERSION}
+release: ${PACKAGE_RELEASE}
+arch: amd64
+platform: linux
+section: default
+priority: extra
+description: "Meta package that installs all OpenBao plugins"
+
+maintainer: OpenBao Community
+homepage: https://github.com/openbao/openbao-plugins
+license: MPL-2.0
+
+disable_globbing: false
+
+replaces:
+  - openbao-plugins
+
+provides:
+  - openbao-plugins
+
+# Dependencies - this meta package pulls in all plugin packages
+depends:
+  - openbao-plugin-secret-consul
+  - openbao-plugin-secret-nomad
+
+# No actual files in this meta package
+contents: []