[MM-31094] Replication Lag (#16888)

* MM-31094: Adds tooling to develop and test using a MySQL instance with replication lag. Adds some lazy lookups to fallback to master if results are not found.

* MM-31094: Removes mysql-read-replica from default docker services.

* MM-31094: Switches (store..SessionStore).Get and (store.TeamStore).GetMember to using context.Context.

* MM-31094: Updates (store.UsersStore).Get to use context.

* MM-31094: Updates (store.PostStore).Get to use context.

* MM-31094: Removes feature flag and config setting.

* MM-31094: Rolls back some master reads.

* MM-31094: Rolls a non-cache read.

* MM-31094: Removes feature flag from the store.

* MM-31094: Removes unused constant and struct field.

* MM-31094: Removes some old feature flag references.

* MM-31094: Fixes some tests.

* MM-31094: App layers fix.

* MM-31094: Fixes mocks.

* MM-31094: Don't reparse flag.

* MM-31094: No reparse.

* MM-31094: Removed unused FeatureFlags field.

* MM-31094: Removes unnecessary feature flags variable declarations.

* MM-31094: Fixes copy-paste error.

* MM-31094: Fixes logical error.

* MM-30194: Removes test method from store.

* Revert "MM-30194: Removes test method from store."

This reverts commit d5a6e8529bd5f4d993824c828e239d009b05e567.

* MM-31094: Conforming to make's strange syntax.

* MM-31094: Configures helper for read replica with option.

* MM-31094: Adds some missing ctx's.

* MM-31094: WIP

* MM-31094: Updates test names.

* MM-31094: WIP

* MM-31094: Removes unnecessary master reads.

* MM-31094: ID case changes out of scope.

* MM-31094: Removes unused context.

* MM-31094: Switches to a helper. Removes some var naming changes. Fixes a merge error.

* MM-31094: Removes SQLITE db driver ref.

* MM-31094: Layer generate fix.

* MM-31094: Removes unnecessary changes.

* MM-31094: Moves test method.

* MM-31094: Re-add previous fix.

* MM-31094: Removes make command for dev.

* MM-31094: Fix for login.

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

store/sqlstore/session_store.go

@@ -73,10 +73,10 @@ func (me SqlSessionStore) Save(session *model.Session) (*model.Session, error) {
 	return session, nil
 }
 
-func (me SqlSessionStore) Get(sessionIdOrToken string) (*model.Session, error) {
+func (me SqlSessionStore) Get(ctx context.Context, sessionIdOrToken string) (*model.Session, error) {
 	var sessions []*model.Session
 
-	if _, err := me.GetReplica().Select(&sessions, "SELECT * FROM Sessions WHERE Token = :Token OR Id = :Id LIMIT 1", map[string]interface{}{"Token": sessionIdOrToken, "Id": sessionIdOrToken}); err != nil {
+	if _, err := me.DBFromContext(ctx).Select(&sessions, "SELECT * FROM Sessions WHERE Token = :Token OR Id = :Id LIMIT 1", map[string]interface{}{"Token": sessionIdOrToken, "Id": sessionIdOrToken}); err != nil {
 		return nil, errors.Wrapf(err, "failed to find Sessions with sessionIdOrToken=%s", sessionIdOrToken)
 	} else if len(sessions) == 0 {
 		return nil, store.NewErrNotFound("Session", fmt.Sprintf("sessionIdOrToken=%s", sessionIdOrToken))
@@ -249,7 +249,7 @@ func (me SqlSessionStore) UpdateDeviceId(id string, deviceId string, expiresAt i
 }
 
 func (me SqlSessionStore) UpdateProps(session *model.Session) error {
-	oldSession, err := me.Get(session.Id)
+	oldSession, err := me.Get(context.Background(), session.Id)
 	if err != nil {
 		return err
 	}