Load-balance gcstress and gcverify ART test configurations.

Configuration art-gcstress-gcverify is sometimes hitting the build
timeout. Move 'interpreter', 'optimizing', and 'jit' coverage to other
gcstress configurations to balance the load among builders.

Test: art/test/testrunner/run_build_test_target.py -j30 art-gcstress-gcverify
Test: art/test/testrunner/run_build_test_target.py -j30 art-interpreter-gcstress
Test: art/test/testrunner/run_build_test_target.py -j30 art-optimizing-gcstress
Test: art/test/testrunner/run_build_test_target.py -j30 art-jit-gcstress
Bug: 74196452
Bug: 62611253
Change-Id: I7793256b284a56ce442d2d340405ca810a207dd8
diff --git a/test/testrunner/target_config.py b/test/testrunner/target_config.py
index 95e488d..e0757ab 100644
--- a/test/testrunner/target_config.py
+++ b/test/testrunner/target_config.py
@@ -55,20 +55,31 @@
                       '--optimizing']
     },
     'art-gcstress-gcverify': {
-        'run-test': ['--gcstress',
+        # Do not exercise '--interpreter', '--optimizing', nor '--jit' in this
+        # configuration, as they are covered by the 'art-interpreter-gcstress',
+        # 'art-optimizing-gcstress' and 'art-jit-gcstress' configurations below.
+        'run-test': ['--interp-ac',
+                     '--speed-profile',
+                     '--gcstress',
                      '--gcverify']
     },
+    # Rename this configuration as 'art-interpreter-gcstress-gcverify' (b/62611253).
     'art-interpreter-gcstress' : {
         'run-test' : ['--interpreter',
-                      '--gcstress']
+                      '--gcstress',
+                      '--gcverify']
     },
+    # Rename this configuration as 'art-optimizing-gcstress-gcverify' (b/62611253).
     'art-optimizing-gcstress' : {
-        'run-test' : ['--gcstress',
-                      '--optimizing']
+        'run-test' : ['--optimizing',
+                      '--gcstress',
+                      '--gcverify']
     },
+    # Rename this configuration as 'art-jit-gcstress-gcverify' (b/62611253).
     'art-jit-gcstress' : {
         'run-test' : ['--jit',
-                      '--gcstress']
+                      '--gcstress',
+                      '--gcverify']
     },
     'art-jit-on-first-use-gcstress' : {
         'run-test' : ['--jit',