[MM-12667] Allow including deactivated users in bulk import and export (#10353)

* [MM-12667] Allow including deactivated users in bulk import and export

1. Added `deleteAt` for user type import line
2. Adding deactivated users data in bulk export
3. Importing deactivated users data in bulk import

Added/Updated relevant test cases

* Fixed export of replies to posts by deleted users.
Updated tests for same

store/sqlstore/post_store.go

@@ -1327,7 +1327,6 @@ func (s *SqlPostStore) GetParentsForExportAfter(limit int, afterId string) store
                     AND p1.DeleteAt = 0
 					AND Channels.DeleteAt = 0
 					AND Teams.DeleteAt = 0
-					AND Users.DeleteAt = 0
                 ORDER BY
                     p1.Id
                 LIMIT
@@ -1356,7 +1355,6 @@ func (s *SqlPostStore) GetRepliesForExport(parentId string) store.StoreChannel {
                 WHERE
                     Posts.ParentId = :ParentId
                     AND Posts.DeleteAt = 0
-					AND Users.DeleteAt = 0
                 ORDER BY
                     Posts.Id`,
 			map[string]interface{}{"ParentId": parentId})

store/storetest/post_store.go

@@ -1941,4 +1941,20 @@ func testPostStoreGetRepliesForExport(t *testing.T, ss store.Store) {
 	assert.Equal(t, reply1.Id, p2.Id)
 	assert.Equal(t, reply1.Message, p2.Message)
 	assert.Equal(t, reply1.Username, u1.Username)
+
+	// Checking whether replies by deleted user are exported
+	u1.DeleteAt = 1002
+	store.Must(ss.User().Update(&u1, false))
+
+	r1 = <-ss.Post().GetRepliesForExport(p1.Id)
+	assert.Nil(t, r1.Err)
+
+	d1 = r1.Data.([]*model.ReplyForExport)
+	assert.Len(t, d1, 1)
+
+	reply1 = d1[0]
+	assert.Equal(t, reply1.Id, p2.Id)
+	assert.Equal(t, reply1.Message, p2.Message)
+	assert.Equal(t, reply1.Username, u1.Username)
+
 }