fix: server_logs creates inf loop on l-s install

fix: flag that skips storing server_logs on DB when table does not yet exists
fix: hook server logs migration as soft dependency on initial
Revert "fix: hook server logs migration as soft dependency on initial"
This reverts commit e6c4cf4419c894598393997637dcfd95a5ff6a0e.
fix: empty promise, actually no additional promise was needed

bin/lamassu-migrate

@@ -24,6 +24,7 @@ const getMigrateFile = () => {
 db.none(createMigration)
   .then(() => Promise.all([db.oneOrNone(select), getMigrateFile()]))
   .then(([qResult, migrateFile]) => {
+    process.env.SKIP_SERVER_LOGS = !(qResult && qResult.data.migrations.find(({ title }) => title === '1572524820075-server-support-logs.js'))
     if (!qResult && migrateFile) {
       return db.none('insert into migrations (id, data) values (1, $1)', [migrateFile])
     }

lib/db.js

@@ -20,6 +20,8 @@ const pgp = Pgp({
 const db = pgp(psqlUrl)
 
 eventBus.subscribe('log', args => {
+  if (process.env.SKIP_SERVER_LOGS) return
+
   const { level, message, meta } = args
   const msgToSave = message ? message : _.get('message', meta)