Added missing _search/point_in_time tests.

Signed-off-by: dblock <dblock@amazon.com>

tests/default/_core/point_in_time/all.yaml

@@ -0,0 +1,33 @@
+$schema: ../../../../json_schemas/test_story.schema.yaml
+
+description: Test point-in-time.
+version: '>= 2.4'
+epilogues:
+  - path: /_search/point_in_time/_all
+    method: DELETE
+  - path: /movies
+    method: DELETE
+    status: [200, 404]
+prologues:
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: movies}}
+        - {title: The Cruise, year: 1998}
+        - {create: {_index: movies}}
+        - {title: Drive, year: 1960}
+  - path: /movies/_search/point_in_time
+    method: POST
+    parameters:
+      keep_alive: 1m
+chapters:
+  - synopsis: Get all point in time.
+    path: /_search/point_in_time/_all
+    method: GET
+  - synopsis: Delete all point in time.
+    path: /_search/point_in_time/_all
+    method: DELETE

tests/default/_core/search/point_in_time.yaml

@@ -0,0 +1,37 @@
+$schema: ../../../../json_schemas/test_story.schema.yaml
+
+description: Test point-in-time.
+version: '>= 2.4'
+epilogues:
+  - path: /_search/point_in_time/_all
+    method: DELETE
+  - path: /movies
+    method: DELETE
+    status: [200, 404]
+prologues:
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: movies}}
+        - {title: The Cruise, year: 1998}
+        - {create: {_index: movies}}
+        - {title: Drive, year: 1960}
+  - path: /movies/_search/point_in_time
+    id: pit
+    method: POST
+    parameters:
+      keep_alive: 1m
+    output:
+      id: payload.pit_id
+chapters:
+  - synopsis: Delete all pits.
+    path: /_search/point_in_time
+    request:
+      payload:
+        pit_id:
+          - ${pit.id}
+    method: DELETE

tests/default/indices/search/point_in_time.yaml

@@ -0,0 +1,30 @@
+$schema: ../../../../json_schemas/test_story.schema.yaml
+
+description: Test point-in-time.
+version: '>= 2.4'
+epilogues:
+  - path: /_search/point_in_time/_all
+    method: DELETE
+  - path: /movies
+    method: DELETE
+    status: [200, 404]
+prologues:
+  - path: /_bulk
+    method: POST
+    parameters:
+      refresh: true
+    request:
+      content_type: application/x-ndjson
+      payload:
+        - {create: {_index: movies}}
+        - {title: The Cruise, year: 1998}
+        - {create: {_index: movies}}
+        - {title: Drive, year: 1960}
+chapters:
+  - synopsis: Create a point in time.
+    path: /{index}/_search/point_in_time
+    method: POST
+    parameters:
+      index:
+        - movies
+      keep_alive: 1m