debian: bump to v0.15.0
+td-agent-bit (0.15.0) stable; urgency=low
+
+ * Fluent Bit v0.15.0
+
+ -- Eduardo Silva <eduardo@treasure-data.com> Fri, 05 Oct 2018 22:00:00 -0600
+
td-agent-bit (0.14.0) stable; urgency=low
* Fluent Bit v0.14.0
