tests: add kubernetes parser annotation order case

Add a filter_kubernetes runtime test fixture where fluentbit.io/parser is listed before container-specific parsers.

Signed-off-by: Yu Yi <yiyu@google.com>

Author: erain

tests/runtime/data/kubernetes/log/annotations-parser/annotations-parser-order_multiple-1_container-1.log

@@ -0,0 +1,2 @@
+{"log":"[2019-04-05T14:54:23.584269761] Container 1 is logging on stdout\n","stream":"stdout","time":"2019-04-01T17:58:33.598656444Z"}
+{"log":"[2019-04-05T14:54:23.584269761] Container 1 is logging on stderr\n","stream":"stderr","time":"2019-04-01T17:58:33.698656444Z"}

tests/runtime/data/kubernetes/meta/annotations-parser-order_multiple-1.meta

@@ -0,0 +1,12 @@
+{
+    "metadata": {
+        "annotations": {
+            "fluentbit.io/parser": "default-parser",
+            "fluentbit.io/parser-container-1": "container-1-parser",
+            "fluentbit.io/parser_stdout-container-2": "container-2-stdout-parser",
+            "fluentbit.io/parser_stderr-container-2": "container-2-stderr-parser",
+            "fluentbit.io/parser_stdout-container-3": "container-3-stdout-parser",
+            "fluentbit.io/parser_stderr-container-4": "container-4-stderr-parser"
+        }
+    }
+}

tests/runtime/data/kubernetes/out/annotations-parser/annotations-parser-order_multiple-1_container-1_stdout.out

@@ -0,0 +1 @@
+[1554476063.584270,{"stream":"stdout","container_1_parser":"Container 1 is logging on stdout","kubernetes":{"pod_name":"multiple-1","namespace_name":"annotations-parser-order","annotations":{"fluentbit.io/parser":"default-parser","fluentbit.io/parser-container-1":"container-1-parser","fluentbit.io/parser_stdout-container-2":"container-2-stdout-parser","fluentbit.io/parser_stderr-container-2":"container-2-stderr-parser","fluentbit.io/parser_stdout-container-3":"container-3-stdout-parser","fluentbit.io/parser_stderr-container-4":"container-4-stderr-parser"},"container_name":"container-1"}}]

tests/runtime/filter_kubernetes.c

@@ -631,6 +631,12 @@ static void flb_test_annotations_parser_multiple_1_container_1_stdout()
     flb_test_annotations_parser("annotations-parser_multiple-1_container-1", "stdout", 1);
 }
 
+static void flb_test_annotations_parser_order_multiple_1_container_1_stdout()
+{
+    flb_test_annotations_parser("annotations-parser-order_multiple-1_container-1",
+                                "stdout", 1);
+}
+
 static void flb_test_annotations_parser_multiple_1_container_1_stderr()
 {
     flb_test_annotations_parser("annotations-parser_multiple-1_container-1", "stderr", 1);
@@ -1045,6 +1051,7 @@ TEST_LIST = {
     {"kube_annotations_parser_stderr_text_stdout", flb_test_annotations_parser_stderr_text_stdout},
     {"kube_annotations_parser_stderr_text_stderr", flb_test_annotations_parser_stderr_text_stderr},
     {"kube_annotations_parser_multiple_1_container_1_stdout", flb_test_annotations_parser_multiple_1_container_1_stdout},
+    {"kube_annotations_parser_order_multiple_1_container_1_stdout", flb_test_annotations_parser_order_multiple_1_container_1_stdout},
     {"kube_annotations_parser_multiple_1_container_1_stderr", flb_test_annotations_parser_multiple_1_container_1_stderr},
     {"kube_annotations_parser_multiple_1_container_2_stdout", flb_test_annotations_parser_multiple_1_container_2_stdout},
     {"kube_annotations_parser_multiple_1_container_2_stderr", flb_test_annotations_parser_multiple_1_container_2_stderr},