Don't run test if mysql/pg aren't configured. #76

test/box/net_sql.common.skipcond

+# encoding: tarantool
+
+import os
+
+try:
+	(host, port, user, password, db) = os.getenv('MYSQL').split(':')
+
+except (RuntimeError, TypeError, NameError, AttributeError, ValueError):
+	self.skip = 1
+
+
+import os
+
+try:
+	(host, port, user, password, db) = os.getenv('PG').split(':')
+
+except (RuntimeError, TypeError, NameError, AttributeError, ValueError):
+	self.skip = 1