MM-53228: Adding schema version to cluster info (#24209)

With the schema version available, a job can query for
the cluster info to confirm whether or not all nodes
in a cluster are upgraded to the same version or not.

This will help it in determining whether to start
the job or not.

https://mattermost.atlassian.net/browse/MM-53228

```release-note
NONE
```

server/channels/store/storetest/mocks/Store.go

@@ -346,6 +346,30 @@ func (_m *Store) GetInternalReplicaDB() *sql.DB {
 	return r0
 }
 
+// GetLocalSchemaVersion provides a mock function with given fields:
+func (_m *Store) GetLocalSchemaVersion() (int, error) {
+	ret := _m.Called()
+
+	var r0 int
+	var r1 error
+	if rf, ok := ret.Get(0).(func() (int, error)); ok {
+		return rf()
+	}
+	if rf, ok := ret.Get(0).(func() int); ok {
+		r0 = rf()
+	} else {
+		r0 = ret.Get(0).(int)
+	}
+
+	if rf, ok := ret.Get(1).(func() error); ok {
+		r1 = rf()
+	} else {
+		r1 = ret.Error(1)
+	}
+
+	return r0, r1
+}
+
 // Group provides a mock function with given fields:
 func (_m *Store) Group() store.GroupStore {
 	ret := _m.Called()

server/channels/store/storetest/store.go

@@ -114,17 +114,18 @@ func (s *Store) PostAcknowledgement() store.PostAcknowledgementStore {
 func (s *Store) PostPersistentNotification() store.PostPersistentNotificationStore {
 	return &s.PostPersistentNotificationStore
 }
-func (s *Store) MarkSystemRanUnitTests()            { /* do nothing */ }
-func (s *Store) Close()                             { /* do nothing */ }
-func (s *Store) LockToMaster()                      { /* do nothing */ }
-func (s *Store) UnlockFromMaster()                  { /* do nothing */ }
-func (s *Store) DropAllTables()                     { /* do nothing */ }
-func (s *Store) GetDbVersion(bool) (string, error)  { return "", nil }
-func (s *Store) GetInternalMasterDB() *sql.DB       { return nil }
-func (s *Store) GetInternalReplicaDB() *sql.DB      { return nil }
-func (s *Store) GetInternalReplicaDBs() []*sql.DB   { return nil }
-func (s *Store) RecycleDBConnections(time.Duration) {}
-func (s *Store) GetDBSchemaVersion() (int, error)   { return 1, nil }
+func (s *Store) MarkSystemRanUnitTests()             { /* do nothing */ }
+func (s *Store) Close()                              { /* do nothing */ }
+func (s *Store) LockToMaster()                       { /* do nothing */ }
+func (s *Store) UnlockFromMaster()                   { /* do nothing */ }
+func (s *Store) DropAllTables()                      { /* do nothing */ }
+func (s *Store) GetDbVersion(bool) (string, error)   { return "", nil }
+func (s *Store) GetInternalMasterDB() *sql.DB        { return nil }
+func (s *Store) GetInternalReplicaDB() *sql.DB       { return nil }
+func (s *Store) GetInternalReplicaDBs() []*sql.DB    { return nil }
+func (s *Store) RecycleDBConnections(time.Duration)  {}
+func (s *Store) GetDBSchemaVersion() (int, error)    { return 1, nil }
+func (s *Store) GetLocalSchemaVersion() (int, error) { return 1, nil }
 func (s *Store) GetAppliedMigrations() ([]model.AppliedMigration, error) {
 	return []model.AppliedMigration{}, nil
 }