Fetch entire git tree for master comparison

The api test needs to compare the current commit on the remote branch
to the master branch. Based on the documentation, 'fetch-depth: 0' is
intended to fetch all branches and tags.

Signed-off-by: William Douglas <william.douglas@intel.com>

.github/workflows/ccpp.yml

@@ -46,6 +46,8 @@ jobs:
     timeout-minutes: 60
     steps:
     - uses: actions/checkout@v3
+      with:
+        fetch-depth: 0
 
     - name: install_bats
       run:  sudo apt-get install bats