main/mqtt-exec: add example conf.d file

main/mqtt-exec/APKBUILD

@@ -16,6 +16,7 @@ source="mqtt-exec-$pkgver.tar.gz::https://github.com/ncopa/mqtt-exec/archive/v$p
 	0001-Let-library-generate-client-id-when-unset.patch
 	restore-default-sigpipe-handler.patch
 	mqtt-exec.initd
+	mqtt-exec.confd
 	"
 
 builddir="$srcdir"/mqtt-exec-$pkgver
@@ -38,4 +39,5 @@ sha512sums="
 7007ad1afcba6b5c0e6224a30e3a6c1b9ce178603b27f575bb76d7b979b8e7f4c4c1226afa3ff8cf1f217fff832d0a69cff1cfbc205203dcb8a98afbf6f345ed  0001-Let-library-generate-client-id-when-unset.patch
 a211b3c43048cebb3429794c4a6d2a33778fff8658ffdc8d9756d6aef8e9c04b71720ff604731ffcdd98f4657126f70c1a28ad8f11ca998793f4c16f56845103  restore-default-sigpipe-handler.patch
 f8cab7fe709fc80b3a75f1d65d55e10c05a4b27e319a9190d3ee78050fea86d8c6512e3d624b8b413dab01b2043bed5f672453090251b93d261d79125f9f0d17  mqtt-exec.initd
+e5cce69f5ad1f0fcf0eb0be7675c2f4ca4ba5518e8303adb16673b7e402dbe8d48b57c4b4512a0d3aba4541241d2ddeca68b88354d089606f67a5549508b44b5  mqtt-exec.confd
 "

main/mqtt-exec/mqtt-exec.confd

+# The MQTT broker to connect to
+#mqtt_broker=msg.alpinelinux.org
+
+# The topics to subscribe to. Separate topics by whitespace.
+#mqtt_topics=
+
+# Set the topic for the Will
+#will_topic=
+
+# Whether the Will should be retained or not
+#will_retain=yes
+
+# The message in the Will
+#will_payload=
+
+# QOS level for the Will
+#will_qos=
+
+# Optional username to authenticate as
+#mqtt_user=
+
+# Password for the user
+#export MQTT_EXEC_PASSWORD=