Add metadata attributes

Added the following attributes to the job templates: image.date,
image.version, image.board and image.type.

These attributes can be used to filter LAVA tests results based
on their values.

Signed-off-by: Luis Araujo <luis.araujo@collabora.co.uk>

templates/group-apparmor-tpl.json

@@ -15,6 +15,12 @@
         "password_prompt": "Password:",
         "password": "user",
         "login_commands": [ "sudo su" ]
+      },
+      "metadata": {
+        "image.version": "{{image_date}}",
+        "image.release": "{{release_version}}",
+        "image.board": "{{board}}",
+        "image.type": "{{image_type}}"
       }
     },
     {

templates/group-clutter-tpl.json

@@ -15,6 +15,12 @@
         "password_prompt": "Password:",
         "password": "user",
         "login_commands": [ "sudo su" ]
+      },
+      "metadata": {
+        "image.version": "{{image_date}}",
+        "image.release": "{{release_version}}",
+        "image.board": "{{board}}",
+        "image.type": "{{image_type}}"
       }
     },
     {

templates/group-common-tpl.json

@@ -15,6 +15,12 @@
         "password_prompt": "Password:",
         "password": "user",
         "login_commands": [ "sudo su" ]
+      },
+      "metadata": {
+        "image.version": "{{image_date}}",
+        "image.release": "{{release_version}}",
+        "image.board": "{{board}}",
+        "image.type": "{{image_type}}"
       }
     },
     {

templates/group-folks-tpl.json

@@ -15,6 +15,12 @@
         "password_prompt": "Password:",
         "password": "user",
         "login_commands": [ "sudo su" ]
+      },
+      "metadata": {
+        "image.version": "{{image_date}}",
+        "image.release": "{{release_version}}",
+        "image.board": "{{board}}",
+        "image.type": "{{image_type}}"
       }
     },
     {

templates/group-sdk-tpl.json

@@ -15,6 +15,12 @@
         "password_prompt": "Password:",
         "password": "user",
         "login_commands": [ "sudo su" ]
+      },
+      "metadata": {
+        "image.version": "{{image_date}}",
+        "image.release": "{{release_version}}",
+        "image.board": "{{board}}",
+        "image.type": "{{image_type}}"
       }
     },
     {

templates/sqlite-tpl.json

@@ -15,6 +15,12 @@
         "password_prompt": "Password:",
         "password": "user",
         "login_commands": [ "sudo su" ]
+      },
+      "metadata": {
+        "image.version": "{{image_date}}",
+        "image.release": "{{release_version}}",
+        "image.board": "{{board}}",
+        "image.type": "{{image_type}}"
       }
     },
     {