[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/opentracinglayer/opentracinglayer.go

@@ -4934,7 +4934,7 @@ func (s *OpenTracingLayerPostStore) Delete(postID string, time int64, deleteByID
 	return err
 }
 
-func (s *OpenTracingLayerPostStore) Get(id string, skipFetchThreads bool, collapsedThreads bool, collapsedThreadsExtended bool) (*model.PostList, error) {
+func (s *OpenTracingLayerPostStore) Get(ctx context.Context, id string, skipFetchThreads bool, collapsedThreads bool, collapsedThreadsExtended bool) (*model.PostList, error) {
 	origCtx := s.Root.Store.Context()
 	span, newCtx := tracing.StartSpanWithParentByContext(s.Root.Store.Context(), "PostStore.Get")
 	s.Root.Store.SetContext(newCtx)
@@ -4943,7 +4943,7 @@ func (s *OpenTracingLayerPostStore) Get(id string, skipFetchThreads bool, collap
 	}()
 
 	defer span.Finish()
-	result, err := s.PostStore.Get(id, skipFetchThreads, collapsedThreads, collapsedThreadsExtended)
+	result, err := s.PostStore.Get(ctx, id, skipFetchThreads, collapsedThreads, collapsedThreadsExtended)
 	if err != nil {
 		span.LogFields(spanlog.Error(err))
 		ext.Error.Set(span, true)
@@ -6218,7 +6218,7 @@ func (s *OpenTracingLayerSessionStore) Cleanup(expiryTime int64, batchSize int64
 
 }
 
-func (s *OpenTracingLayerSessionStore) Get(sessionIDOrToken string) (*model.Session, error) {
+func (s *OpenTracingLayerSessionStore) Get(ctx context.Context, sessionIDOrToken string) (*model.Session, error) {
 	origCtx := s.Root.Store.Context()
 	span, newCtx := tracing.StartSpanWithParentByContext(s.Root.Store.Context(), "SessionStore.Get")
 	s.Root.Store.SetContext(newCtx)
@@ -6227,7 +6227,7 @@ func (s *OpenTracingLayerSessionStore) Get(sessionIDOrToken string) (*model.Sess
 	}()
 
 	defer span.Finish()
-	result, err := s.SessionStore.Get(sessionIDOrToken)
+	result, err := s.SessionStore.Get(ctx, sessionIDOrToken)
 	if err != nil {
 		span.LogFields(spanlog.Error(err))
 		ext.Error.Set(span, true)
@@ -7095,7 +7095,7 @@ func (s *OpenTracingLayerTeamStore) GetChannelUnreadsForTeam(teamID string, user
 	return result, err
 }
 
-func (s *OpenTracingLayerTeamStore) GetMember(teamID string, userId string) (*model.TeamMember, error) {
+func (s *OpenTracingLayerTeamStore) GetMember(ctx context.Context, teamID string, userId string) (*model.TeamMember, error) {
 	origCtx := s.Root.Store.Context()
 	span, newCtx := tracing.StartSpanWithParentByContext(s.Root.Store.Context(), "TeamStore.GetMember")
 	s.Root.Store.SetContext(newCtx)
@@ -7104,7 +7104,7 @@ func (s *OpenTracingLayerTeamStore) GetMember(teamID string, userId string) (*mo
 	}()
 
 	defer span.Finish()
-	result, err := s.TeamStore.GetMember(teamID, userId)
+	result, err := s.TeamStore.GetMember(ctx, teamID, userId)
 	if err != nil {
 		span.LogFields(spanlog.Error(err))
 		ext.Error.Set(span, true)