unittest using externally managed database (#9400)

* MM-12083: unittest using externally managed database

* cherry-pick Makefile changes from @cpanato

* Jenkins changes (#9915)

* add docker compose

* udpate

* when using minio dont need to set the region

* update

* add wait for it script

* using old minio

* add new jenkins file

* update makefile

* add dockerfile

* rename the docker-compose proj to avoid colision (#9917)

* rename the docker-compose proj to avoid colision

* enable debug

* enable debug to double checkt the branchs and fix docker-compose name (#9919)

* add ee hash to check (#9920)

* fix name (#9921)

* update jenkins file to push from branch and prs

* if a new push comes in stop the running build

* split mysql and postgres variables

* add script to run jenkins-like env in local dev env

* update docker-compose project name to use uuid to make it more randon

* fix DCNAME definition

* update elasticsearch docker image

* revert test

* tidy up stages, and wait for mysql differently

* update docker image and add check for postgres

* checking if is ready

* update docker compose to have a wait for deps

* add readme and rename dockerfile

* fix -unittest setup

* using mm docker image

* restore parallel unit tests at the package level

Spin up a dedicated database for each package under test to avoid races in accessing the same tables.
Simplify the interface for configuring the test database to just a DSN instead of multiple exports for each field.

* try to work around root mysql access in CI

* update local-test-env.sh too

* MYSQL_ROOT_HOST: %

* fix missing quotes

* setting some memory limits for mysql

* revert memory docker compose does not support

* fix env name for postgres

* expose errors in app/export_test.go

* fix test label, better error checking on teardown

* increase query timeout for tests

* fix export_test

* update local dev script

* add configurable mysql root passwd

web/handlers_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/mattermost/mattermost-server/app"
 	"github.com/mattermost/mattermost-server/model"
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func handlerForHTTPErrors(c *Context, w http.ResponseWriter, r *http.Request) {
@@ -19,6 +20,7 @@ func handlerForHTTPErrors(c *Context, w http.ResponseWriter, r *http.Request) {
 
 func TestHandlerServeHTTPErrors(t *testing.T) {
 	s, err := app.NewServer(app.StoreOverride(mainHelper.Store), app.DisableConfigWatch)
+	require.Nil(t, err)
 	defer s.Shutdown()
 
 	web := New(s, s.AppOptions, s.Router)
@@ -62,6 +64,7 @@ func handlerForHTTPSecureTransport(c *Context, w http.ResponseWriter, r *http.Re
 
 func TestHandlerServeHTTPSecureTransport(t *testing.T) {
 	s, err := app.NewServer(app.StoreOverride(mainHelper.Store), app.DisableConfigWatch)
+	require.Nil(t, err)
 	defer s.Shutdown()
 
 	a := s.FakeApp()