Add go release versions to client_matrix.py
diff --git a/tools/interop_matrix/client_matrix.py b/tools/interop_matrix/client_matrix.py
index c8dbb3a..cbfaafe 100644
--- a/tools/interop_matrix/client_matrix.py
+++ b/tools/interop_matrix/client_matrix.py
@@ -53,6 +53,10 @@
         'v1.5.2',
         'v1.6.0',
         'v1.7.0',
+        'v1.7.1',
+        'v1.7.2',
+        'v1.7.3',
+        'v1.8.0',
     ],
     'java': [
         'v1.0.3',