Allow wait_ssh to wait for root user to be ready.
This solves the issue where we perform a wait_ssh()
successfully, but the root user is not yet ready
to be logged in.

Signed-off-by: Robert Foley <robert.foley@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Puhov <peter.puhov@linaro.org>
---
 tests/vm/basevm.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tests/vm/basevm.py b/tests/vm/basevm.py
index 5ca445e29a..7f26892268 100644
--- a/tests/vm/basevm.py
+++ b/tests/vm/basevm.py
@@ -312,7 +312,7 @@ class BaseVM(object):
     def print_step(self, text):
         sys.stderr.write("### %s ...\n" % text)
 
-    def wait_ssh(self, seconds=300):
+    def wait_ssh(self, wait_root=False, seconds=300):
         # Allow more time for VM to boot under TCG.
         if not kvm_available(self.arch):
             seconds *= self.tcg_ssh_timeout_multiplier
@@ -320,7 +320,10 @@ class BaseVM(object):
         endtime = starttime + datetime.timedelta(seconds=seconds)
         guest_up = False
         while datetime.datetime.now() < endtime:
-            if self.ssh("exit 0") == 0:
+            if wait_root and self.ssh_root("exit 0") == 0:
+                guest_up = True
+                break
+            elif self.ssh("exit 0") == 0:
                 guest_up = True
                 break
             seconds = (endtime - datetime.datetime.now()).total_seconds()
-- 
2.17.1