add script for testing mysql migrations

.travis.yml

@@ -20,4 +20,5 @@ before_script:
 
 script:
 - bash scripts/test-sqlite3-migrations.sh
+- bash scripts/test-mysql-migrations.sh
 - go test -v ./pkg/...

scripts/test-mysql-migrations.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+set -e
+rockhopper --config rockhopper_mysql.yaml up
+rockhopper --config rockhopper_mysql.yaml down --to 1

scripts/test-sqlite3-migrations.sh

@@ -1,2 +1,5 @@
 #!/bin/bash
-rm -fv bbgo.sqlite3 && rockhopper --config rockhopper_sqlite.yaml up && rockhopper --config rockhopper_sqlite.yaml down --to 1
+set -e
+rm -fv bbgo.sqlite3
+rockhopper --config rockhopper_sqlite.yaml up
+rockhopper --config rockhopper_sqlite.yaml down --to 1