Add post-deploy and post-rollback hooks

These replace the custom audit_broadcast_cmd code. An additional env
variable MRSK_RUNTIME is passed to them.

The audit broadcast after booting an accessory has been removed.

lib/mrsk/cli/templates/deploy.yml

@@ -25,10 +25,6 @@ registry:
 #   secret:
 #     - RAILS_MASTER_KEY
 
-# Call a broadcast command on deploys.
-# audit_broadcast_cmd:
-#   bin/broadcast_to_bc
-
 # Use a different ssh user than root
 # ssh:
 #   user: app

lib/mrsk/cli/templates/sample_hooks/post-deploy.sample

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# A sample post-deploy hook
+#
+# Checks:
+# 1. We have a clean checkout
+# 2. A remote is configured
+# 3. The branch has been pushed to the remote
+# 4. The version we are deploying matches the remote
+#
+# These environment variables are available:
+# MRSK_RECORDED_AT
+# MRSK_PERFORMER
+# MRSK_VERSION
+# MRSK_DESTINATION (if set)
+# MRSK_RUNTIME
+
+echo "$MRSK_PERFORMER deployed $MRSK_VERSION to $MRSK_DESTINATION in $MRSK_RUNTIME seconds"

lib/mrsk/cli/templates/sample_hooks/post-rollback.sample

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+# A sample post-rollback hook
+#
+# Checks:
+# 1. We have a clean checkout
+# 2. A remote is configured
+# 3. The branch has been pushed to the remote
+# 4. The version we are deploying matches the remote
+#
+# These environment variables are available:
+# MRSK_RECORDED_AT
+# MRSK_PERFORMER
+# MRSK_VERSION
+# MRSK_DESTINATION (if set)
+# MRSK_RUNTIME
+
+echo "$MRSK_PERFORMER rolled back to $MRSK_VERSION on $MRSK_DESTINATION in $MRSK_RUNTIME seconds"