Elasticsearch: run no other test at the same time

As per Bazel test documentation [1] that is: run all the Elasticsearch
docker tests with the 'exclusive' tag set in. Do so to minimize the
slower execution speed factor, thus running them tests in a more natural
fashion. Doing so should then minimize flakiness or only leave true
failures to be fixed. -Actual test execution speeds depending on the
running host resources, of course.

[1] https://docs.bazel.build/versions/master/test-encyclopedia.html

Bug: Issue 9407
Change-Id: Ic9b57b84d06921abab91de57ecd4b86bcfb4272a

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/pgm/BUILD

@@ -18,6 +18,7 @@ acceptance_tests(
     labels = [
         "docker",
         "elastic",
+        "exclusive",
         "pgm",
     ],
     deps = [":util"],

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/ssh/BUILD

@@ -24,8 +24,9 @@ acceptance_tests(
     srcs = ["ElasticIndexIT.java"],
     group = "elastic",
     labels = [
-        "elastic",
         "docker",
+        "elastic",
+        "exclusive",
         "ssh",
     ],
     deps = [

gerrit-elasticsearch/BUILD

@@ -78,6 +78,7 @@ ELASTICSEARCH_TESTS_V6 = {i: "src/test/java/com/google/gerrit/elasticsearch/Elas
 ELASTICSEARCH_TAGS = [
     "docker",
     "elastic",
+    "exclusive",
 ]
 
 [junit_tests(