roachtest: create data dir without disk

Previously, some tests will fail because they still expect `/mnt/data1` to be
present even if it is not used as a node disk, but for other reasons like
installing Kafka, or a directory based request run across all nodes including
the workload node.

Hence, we now create the directory even if the VM only has a boot disk to
support these scenarios.

Epic: None
Release note: None

Author: herkolategan

pkg/roachprod/vm/aws/support.go

@@ -31,6 +31,7 @@ const awsStartupScriptTemplate = `#!/usr/bin/env bash
 
 function setup_disks() {
 {{ if .BootDiskOnly }}
+	mkdir -p /mnt/data1 && chmod 777 /mnt/data1
 	echo "VM has no disk attached other than the boot disk."
 	return 0
 {{ end }}

pkg/roachprod/vm/azure/utils.go

@@ -32,6 +32,7 @@ const azureStartupTemplate = `#!/bin/bash
 
 function setup_disks() {
 {{ if .BootDiskOnly }}
+	mkdir -p /mnt/data1 && chmod 777 /mnt/data1
 	echo "VM has no disk attached other than the boot disk."
 	return 0
 {{ end }}

pkg/roachprod/vm/gce/utils.go

@@ -29,6 +29,7 @@ function setup_disks() {
 	first_setup=$1
 
 {{ if .BootDiskOnly }}
+	mkdir -p /mnt/data1 && chmod 777 /mnt/data1
 	echo "VM has no disk attached other than the boot disk."
 	return 0
 {{ end }}

pkg/roachprod/vm/ibm/startup.go

@@ -29,6 +29,7 @@ const startupTemplate = `#!/usr/bin/env bash
 
 function setup_disks() {
 {{ if .BootDiskOnly }}
+	mkdir -p /mnt/data1 && chmod 777 /mnt/data1
 	echo "VM has no disk attached other than the boot disk."
 	return 0
 {{ end }}