use nomad 1.5.5 (customized)

see misc/nomad.patch

Author: ffffwh

Makefile

@@ -54,7 +54,7 @@ package-common: driver
 
 package: package-common
 	mkdir -p dist/install/usr/bin
-	curl -o dist/nomad.zip "ftp://${RELEASE_FTPD_HOST}/binary/nomad_1.1.2_linux_amd64.zip"
+	curl -o dist/nomad.zip "ftp://${RELEASE_FTPD_HOST}/binary/nomad_1.5.5_linux_amd64.zip"
 	curl -o dist/consul.zip "ftp://${RELEASE_FTPD_HOST}/binary/consul_1.7.2_linux_amd64.zip"
 	mkdir -p dist/install/usr/bin
 	cd dist/install/usr/bin && unzip ../../../nomad.zip && unzip ../../../consul.zip

misc/nomad.patch

@@ -0,0 +1,13 @@
+diff --git a/client/allocrunner/taskrunner/task_runner.go b/client/allocrunner/taskrunner/task_runner.go
+index aae6a314d8..8aac851036 100644
+--- a/client/allocrunner/taskrunner/task_runner.go
++++ b/client/allocrunner/taskrunner/task_runner.go
+@@ -44,7 +44,7 @@ import (
+ const (
+        // defaultMaxEvents is the default max capacity for task events on the
+        // task state. Overrideable for testing.
+-       defaultMaxEvents = 10
++       defaultMaxEvents = 100
+
+        // killBackoffBaseline is the baseline time for exponential backoff while
+        // killing a task.