Ganglia sink using libganglia.so directly (#35)

* Add sink directly using libganglia.so

* Remove unneeded confuse header

* add submodule init to build action

* add submodule init to runonce action

* add installation og ganglia to runonce

* add installation of ganglia to runonce

* add installation of ganglia to runonce

* libconfuse not required

* Remove ganglia submodule

* Remove ganglia.h

* Add Makefile to help creating the libganglia.so link

* Fix cgo header

* Rename new Ganglia sink to 'libgangliaSink'

* Add documentation for libgangliaSink

* Extend make buildsystem with find&symlink helper for libgangliaSink

* Add metric renaming function

* Add build tag 'ganglia' and create corresponding files

.github/workflows/rpmbuild.yml

@@ -9,6 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: recursive
     - uses: TomTheBear/rpmbuild@master
       id: rpm
       name: Build RPM package on CentOS8

.github/workflows/runonce.yml

@@ -6,6 +6,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: recursive
 
     # See: https://github.com/marketplace/actions/setup-go-environment
     - name: Setup Golang
@@ -13,6 +15,9 @@ jobs:
       with:
         go-version: '^1.17.6'
 
+    - name: Setup Ganglia
+      run: sudo apt install ganglia-monitor libganglia1
+
     - name: Build MetricCollector
       run: make
 
@@ -22,6 +27,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
+      with:
+        submodules: recursive
 
     # See: https://github.com/marketplace/actions/setup-go-environment
     - name: Setup Golang
@@ -29,8 +36,11 @@ jobs:
       with:
         go-version: '^1.16.7' # The version AlmaLinux 8.5 uses
 
+    - name: Setup Ganglia
+      run: sudo apt install ganglia-monitor libganglia1
+
     - name: Build MetricCollector
       run: make
 
-    - name: Run MetricCollector
+    - name: Run MetricCollectorlibganglia1
       run: ./cc-metric-collector --once --config .github/ci-config.json