buildsys: utilize GitHub action for testing with valgrind

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

.github/workflows/c-cpp.yml

@@ -0,0 +1,25 @@
+name: C/C++ CI
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: install tools and libraries
+      run: sudo apt-get install valgrind pkg-config automake bash libjansson-dev libyaml-dev libseccomp-dev libxml2-dev gdb
+    - name: autogen.sh
+      run: ./autogen.sh
+    - name: configure
+      run: ./configure --enable-debugging
+    - name: make
+      run: make
+    - name: make units
+      run: make units VG=1