add test for nodes with different versions

Author: ashishkeshan

test/bin/ghe-cluster-each

@@ -20,9 +20,16 @@ for _ in "$@"; do
 done
 
 if [ "$2" == "ghe-version" ]; then
-  echo "fake-uuid: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
-  echo "fake-uuid1: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
-  echo "fake-uuid2: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
+  if [ -n "$MATCHING_VERSIONS" ]; then
+    echo "fake-uuid: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
+    echo "fake-uuid1: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
+    echo "fake-uuid2: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
+  else
+    echo "fake-uuid: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
+    echo "fake-uuid1: GitHub Enterprise Server 3.1.0 lxc 2020-12-16 5e97c07602"
+    echo "fake-uuid2: GitHub Enterprise Server 2.19 lxc 2020-12-13 5e97c07622"
+  fi
+  
   exit 0
 fi