Added all previous minor releases of gRPC to the matrix. Modified the...

Added all previous minor releases of gRPC to the matrix.  Modified the testsuite name format for better display test results in sponge.

tools/interop_matrix/client_matrix.py

@@ -30,9 +30,27 @@ LANG_RUNTIME_MATRIX = {
 }
 
 # Dictionary of releases per language.  For each language, we need to provide
-# a tuple of release tag (used as the tag for the GCR image) and also github hash.
+# a release tag pointing to the latest build of the branch.
 LANG_RELEASE_MATRIX = {
-    'cxx': ['v1.0.1', 'v1.1.2'],
-    'go': ['v1.0.1-GA', 'v1.3.0'],
-    'java': ['v1.0.3', 'v1.1.2'],
+    'cxx': [
+        'v1.0.1',
+        'v1.1.4',
+        'v1.2.5',
+        'v1.3.9',
+        'v1.4.2',
+    ],
+    'go': [
+        'v1.0.5',
+        'v1.2.1',
+        'v1.3.0',
+        'v1.4.2',
+    ],
+    'java': [
+        'v1.0.3',
+        'v1.1.2',
+        'v1.2.0',
+        'v1.3.1',
+        'v1.4.0',
+        'v1.5.0',
+    ],
 }

tools/interop_matrix/run_interop_matrix_tests.py

@@ -168,7 +168,7 @@ def run_tests_for_lang(lang, runtime, images):
         _xml_report_tree,
         resultset,
         'grpc_interop_matrix',
-        '%s__%s:%s'%(lang,runtime,release),
+        '%s__%s %s'%(lang,runtime,release),
         str(uuid.uuid4()))
 
 _docker_images_cleanup = []