QEMU health check may timeout

Issue Background

The QEMU health check may fail due to timeouts

Issue description

There needs to be an entry in the Known issues and Workarounds wiki page outlining the issue, the values that should be modified to overcome it as well as where to make such modifications.

Acceptance criteria

• When the wiki page Known issues and Workarounds contains an entry on this issue.

Good changes, if you have this problem, are timeout changes of this order:

--- board-at-desk-single-dev/tests/qemu-health-check.yaml   2017-06-02 10:27:27.773604689 +0100
+++ board-at-desk-single-dev/tests/qemu-health-check-new.yaml   2017-08-08 09:20:59.252343626 +0100
@@ -19,7 +19,7 @@
   action:
     minutes: 5
   connection:
-    minutes: 2
+    minutes: 5
 priority: medium
 visibility: public
 
@@ -37,7 +37,7 @@
 actions:
 - deploy:
     timeout:
-      minutes: 5
+      minutes: 15
     to: tmpfs
     images:
       rootfs:
@@ -57,7 +57,7 @@
 # START-INLINE-TEST-BLOCK
 - test:
     timeout:
-      minutes: 4
+      minutes: 8
     definitions:
     - repository:
         metadata: