[MySQL][TSDB] Add metric type mapping for performance datastream (#5378)

* Updated changelog and manifest

Author: agithomas

packages/mysql/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.7.0"
+  changes:
+    - description: Added metric type mapping for performance datastream
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/5378
 - version: "1.6.1"
   changes:
     - description: Added categories and/or subcategories.

packages/mysql/data_stream/performance/fields/fields.yml

@@ -7,21 +7,25 @@
       fields:
         - name: max.timer.wait
           type: long
+          metric_type: gauge
           description: Maximum wait time of the summarized events that are timed
         - name: last.seen
           type: date
           description: Time at which the digest was most recently seen
         - name: quantile.95
           type: long
+          metric_type: gauge
           description: The 95th percentile of the statement latency, in picoseconds
         - name: digest
           type: flattened
           description: Performance schema digest
         - name: count.star
           type: long
+          metric_type: gauge
           description: Number of summarized events
         - name: avg.timer.wait
           type: long
+          metric_type: gauge
           description: Average wait time of the summarized events that are timed
     - name: table_io_waits
       type: group
@@ -41,4 +45,5 @@
             Name of the index that was used when the table I/O wait event was recorded. PRIMARY indicates that table I/O used the primary index. NULL means that table I/O used no index. Inserts are counted against INDEX_NAME = NULL
         - name: count.fetch
           type: long
+          metric_type: gauge
           description: Number of all fetch operations > 0

packages/mysql/manifest.yml

@@ -1,7 +1,7 @@
 format_version: 1.0.0
 name: mysql
 title: MySQL
-version: 1.6.1
+version: 1.7.0
 license: basic
 description: Collect logs and metrics from MySQL servers with Elastic Agent.
 type: integration