Merge ~kristinchuang/plainbox-provider-certification-client:add-iot-dmesg_attachment into plainbox-provider-certification-client:master

[Kristin Chuang]

add dmesg_attachment job to iot test plans

Output of job running on 20.04 classic:
https://pastebin.canonical.com/p/4CJpTNsznX/

HTML report of job running on uc18:
https://drive.google.com/file/d/163gi8JMhygiPoNPmSfl_eKzgqItgikwo/view?usp=sharing (see attachments section)

[Vic Liu (zongminl)]

+1 LGTM

review: Approve

[Jonathan Cave (jocave)]

+1

review: Approve

diff --git a/units/client-cert-iot-ubuntucore-16.pxu b/units/client-cert-iot-ubuntucore-16.pxu
index eb1f49e..884eb1b 100644
--- a/units/client-cert-iot-ubuntucore-16.pxu
+++ b/units/client-cert-iot-ubuntucore-16.pxu
@@ -20,6 +20,7 @@ mandatory_include:
   alsa_resource
   dmi
   dmi_attachment
+  dmesg_attachment
   dpkg
   interface
   lsb
@@ -96,6 +97,7 @@ mandatory_include:
   alsa_resource
   dmi
   dmi_attachment
+  dmesg_attachment
   dpkg
   interface
   lsb
diff --git a/units/client-cert-iot-ubuntucore-18.pxu b/units/client-cert-iot-ubuntucore-18.pxu
index 666e428..e7b16e5 100644
--- a/units/client-cert-iot-ubuntucore-18.pxu
+++ b/units/client-cert-iot-ubuntucore-18.pxu
@@ -20,6 +20,7 @@ mandatory_include:
   alsa_resource
   dmi
   dmi_attachment
+  dmesg_attachment
   dpkg
   interface
   lsb
@@ -96,6 +97,7 @@ mandatory_include:
   alsa_resource
   dmi
   dmi_attachment
+  dmesg_attachment
   dpkg
   interface
   lsb
diff --git a/units/client-cert-iot-ubuntucore-20.pxu b/units/client-cert-iot-ubuntucore-20.pxu
index 3ee5909..84b4ed8 100644
--- a/units/client-cert-iot-ubuntucore-20.pxu
+++ b/units/client-cert-iot-ubuntucore-20.pxu
@@ -20,6 +20,7 @@ mandatory_include:
   alsa_resource
   dmi
   dmi_attachment
+  dmesg_attachment
   dpkg
   interface
   lsb
@@ -96,6 +97,7 @@ mandatory_include:
   alsa_resource
   dmi
   dmi_attachment
+  dmesg_attachment
   dpkg
   interface
   lsb