Use f28 explicitly

mariadb.yaml

@@ -0,0 +1,51 @@
+---
+document: modulemd
+version: 2
+data:
+    summary: MariaDB Module
+    description: MariaDB is a community developed branch of MySQL.
+                 MariaDB is a multi-user, multi-threaded SQL database server.
+                 It is a client/server implementation consisting of a server
+                 daemon (mysqld) and many different client programs and
+                 libraries. The base package contains the standard
+                 MariaDB/MySQL client programs and generic MySQL files.
+    license:
+        module: [MIT]
+    dependencies:
+        - buildrequires:
+              platform: [f28]
+          requires:
+              platform: [f28]
+    references:
+        community: https://docs.pagure.org/modularity/
+        documentation: https://github.com/container-images/mariadb/
+        tracker: https://github.com/modularity-modules/mariadb
+    profiles:
+        default:
+            rpms:
+                - mariadb
+                - mariadb-server
+        server:
+            rpms:
+                - mariadb-server
+        client:
+            rpms:
+                - mariadb
+    api:
+        rpms:
+            - mariadb
+            - mariadb-server
+    filter:
+        rpms:
+            - mariadb-bench
+            - mariadb-server-galera
+    buildopts:
+        rpms:
+            macros: |
+                %runselftest 0
+    components:
+        rpms:
+            # mariadb-10.1 from f26
+            mariadb:
+                rationale: MariaDB  package.
+                ref: 76a52e56