MM-41153: Add seats deployed to support packet (#20125)

Support packet contains 2 new fields:
1. Active users.
2. License supported users.

We refactor the code to its separate file.

```release-note
NONE
```

app/server_test.go

@@ -9,7 +9,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net"
 	"net/http"
 	"net/http/httptest"
@@ -247,161 +246,6 @@ func TestDatabaseTypeAndMattermostVersion(t *testing.T) {
 	assert.GreaterOrEqual(t, mattermostVersion, strconv.Itoa(1))
 }
 
-func TestGenerateSupportPacket(t *testing.T) {
-	th := Setup(t)
-	defer th.TearDown()
-
-	d1 := []byte("hello\ngo\n")
-	err := ioutil.WriteFile("mattermost.log", d1, 0777)
-	require.NoError(t, err)
-	err = ioutil.WriteFile("notifications.log", d1, 0777)
-	require.NoError(t, err)
-
-	fileDatas := th.App.GenerateSupportPacket()
-	testFiles := []string{"support_packet.yaml", "plugins.json", "sanitized_config.json", "mattermost.log", "notifications.log"}
-	for i, fileData := range fileDatas {
-		require.NotNil(t, fileData)
-		assert.Equal(t, testFiles[i], fileData.Filename)
-		assert.Positive(t, len(fileData.Body))
-	}
-
-	// Remove these two files and ensure that warning.txt file is generated
-	err = os.Remove("notifications.log")
-	require.NoError(t, err)
-	err = os.Remove("mattermost.log")
-	require.NoError(t, err)
-	fileDatas = th.App.GenerateSupportPacket()
-	testFiles = []string{"support_packet.yaml", "plugins.json", "sanitized_config.json", "warning.txt"}
-	for i, fileData := range fileDatas {
-		require.NotNil(t, fileData)
-		assert.Equal(t, testFiles[i], fileData.Filename)
-		assert.Positive(t, len(fileData.Body))
-	}
-}
-
-func TestGetNotificationsLog(t *testing.T) {
-	th := Setup(t)
-	defer th.TearDown()
-
-	// Disable notifications file to get an error
-	th.App.UpdateConfig(func(cfg *model.Config) {
-		*cfg.NotificationLogSettings.EnableFile = false
-	})
-
-	fileData, warning := th.App.getNotificationsLog()
-	assert.Nil(t, fileData)
-	assert.Equal(t, warning, "Unable to retrieve notifications.log because LogSettings: EnableFile is false in config.json")
-
-	// Enable notifications file but delete any notifications file to get an error trying to read the file
-	th.App.UpdateConfig(func(cfg *model.Config) {
-		*cfg.NotificationLogSettings.EnableFile = true
-	})
-
-	// If any previous notifications.log file, lets delete it
-	os.Remove("notifications.log")
-
-	fileData, warning = th.App.getNotificationsLog()
-	assert.Nil(t, fileData)
-	assert.Contains(t, warning, "ioutil.ReadFile(notificationsLog) Error:")
-
-	// Happy path where we have file and no warning
-	d1 := []byte("hello\ngo\n")
-	err := ioutil.WriteFile("notifications.log", d1, 0777)
-	defer os.Remove("notifications.log")
-	require.NoError(t, err)
-
-	fileData, warning = th.App.getNotificationsLog()
-	require.NotNil(t, fileData)
-	assert.Equal(t, "notifications.log", fileData.Filename)
-	assert.Positive(t, len(fileData.Body))
-	assert.Empty(t, warning)
-}
-
-func TestGetMattermostLog(t *testing.T) {
-	th := Setup(t)
-	defer th.TearDown()
-
-	// disable mattermost log file setting in config so we should get an warning
-	th.App.UpdateConfig(func(cfg *model.Config) {
-		*cfg.LogSettings.EnableFile = false
-	})
-
-	fileData, warning := th.App.getMattermostLog()
-	assert.Nil(t, fileData)
-	assert.Equal(t, "Unable to retrieve mattermost.log because LogSettings: EnableFile is false in config.json", warning)
-
-	// We enable the setting but delete any mattermost log file
-	th.App.UpdateConfig(func(cfg *model.Config) {
-		*cfg.LogSettings.EnableFile = true
-	})
-
-	// If any previous mattermost.log file, lets delete it
-	os.Remove("mattermost.log")
-
-	fileData, warning = th.App.getMattermostLog()
-	assert.Nil(t, fileData)
-	assert.Contains(t, warning, "ioutil.ReadFile(mattermostLog) Error:")
-
-	// Happy path where we get a log file and no warning
-	d1 := []byte("hello\ngo\n")
-	err := ioutil.WriteFile("mattermost.log", d1, 0777)
-	defer os.Remove("mattermost.log")
-	require.NoError(t, err)
-
-	fileData, warning = th.App.getMattermostLog()
-	require.NotNil(t, fileData)
-	assert.Equal(t, "mattermost.log", fileData.Filename)
-	assert.Positive(t, len(fileData.Body))
-	assert.Empty(t, warning)
-}
-
-func TestCreateSanitizedConfigFile(t *testing.T) {
-	th := Setup(t)
-	defer th.TearDown()
-
-	// Happy path where we have a sanitized config file with no warning
-	fileData, warning := th.App.createSanitizedConfigFile()
-	require.NotNil(t, fileData)
-	assert.Equal(t, "sanitized_config.json", fileData.Filename)
-	assert.Positive(t, len(fileData.Body))
-	assert.Empty(t, warning)
-}
-
-func TestCreatePluginsFile(t *testing.T) {
-	th := Setup(t)
-	defer th.TearDown()
-
-	// Happy path where we have a plugins file with no warning
-	fileData, warning := th.App.createPluginsFile()
-	require.NotNil(t, fileData)
-	assert.Equal(t, "plugins.json", fileData.Filename)
-	assert.Positive(t, len(fileData.Body))
-	assert.Empty(t, warning)
-
-	// Turn off plugins so we can get an error
-	th.App.UpdateConfig(func(cfg *model.Config) {
-		*cfg.PluginSettings.Enable = false
-	})
-
-	// Plugins off in settings so no fileData and we get a warning instead
-	fileData, warning = th.App.createPluginsFile()
-	assert.Nil(t, fileData)
-	assert.Contains(t, warning, "c.App.GetPlugins() Error:")
-}
-
-func TestGenerateSupportPacketYaml(t *testing.T) {
-	th := Setup(t)
-	defer th.TearDown()
-
-	// Happy path where we have a support packet yaml file without any warnings
-	fileData, warning := th.App.generateSupportPacketYaml()
-	require.NotNil(t, fileData)
-	assert.Equal(t, "support_packet.yaml", fileData.Filename)
-	assert.Positive(t, len(fileData.Body))
-	assert.Empty(t, warning)
-
-}
-
 func TestStartServerTLSVersion(t *testing.T) {
 	configStore, _ := config.NewMemoryStore()
 	store, _ := config.NewStoreFromBacking(configStore, nil, false)