Add YAML tests for added parameters

Author: pquentin

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/msearch/10_basic.yml

@@ -1,5 +1,7 @@
 ---
 setup:
+  - requires:
+      test_runner_features: allowed_warnings
 
   - do:
       index:
@@ -67,6 +69,12 @@ setup:
         rest_total_hits_as_int: true
         max_concurrent_shard_requests: 1
         max_concurrent_searches: 1
+        ignore_unavailable: false
+        ignore_throttled: false
+        allow_no_indices: false
+        expand_wildcards: open
+        include_named_queries_score: false
+        index: index_*
         body:
           - index: index_*
           - query:
@@ -83,6 +91,8 @@ setup:
           - {}
           - query:
               match_all: {}
+      allowed_warnings:
+        - "[ignore_throttled] parameter is deprecated because frozen indices have been deprecated. Consider cold or frozen tiers in place of frozen indices."
 
   - match:  { responses.0.hits.total:     2  }
   - match:  { responses.1.hits.total:     1  }

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/msearch/40_routing.yml

@@ -0,0 +1,25 @@
+---
+setup:
+  - do:
+      index:
+          index:  index_1
+          routing: "1"
+          id:     "1"
+          body:   { foo: bar }
+
+  - do:
+      indices.refresh: {}
+
+---
+"Routing":
+
+  - do:
+      msearch:
+        rest_total_hits_as_int: true
+        routing: "1"
+        body:
+          - {}
+          - query:
+              match_all: {}
+
+  - match:  { responses.0.hits.total:     1  }