[ACT][PATCH v3] UBUNTU: SAUCE: ubuntu_boot: fix second test execution

[Krzysztof Kozlowski]

The setup() might not be called on second test run and actually autotest
design assumes setup() for given version will be called exactly once.
It is expected from setup() to modify only persistent state of the
system, so on next run it's execution is not needed.  Runtime-only
settings should not be configured via setup().

This fixes failure on second test execution:

    00:54:03 INFO | 	START	ubuntu_boot.log_check	ubuntu_boot.log_check
    00:54:03 DEBUG| Persistent state client._record_indent now set to 2
    00:54:03 DEBUG| Persistent state client.unexpected_reboot now set to ('ubuntu_boot.log_check', 'ubuntu_boot.log_check')
    00:54:03 DEBUG| Waiting for pid 19403 for 300 seconds
    00:54:03 WARNI| System python is too old, crash handling disabled
    00:54:03 ERROR| Exception escaping from test:
    Traceback (most recent call last):
      File "/home/azure/autotest/client/shared/test.py", line 411, in _exec
        _call_test_function(self.execute, *p_args, **p_dargs)
      File "/home/azure/autotest/client/shared/test.py", line 830, in _call_test_function
        raise error.UnhandledTestFail(e)
    UnhandledTestFail: Unhandled AttributeError: 'ubuntu_boot' object has no attribute 'centos'
    Traceback (most recent call last):
      File "/home/azure/autotest/client/shared/test.py", line 823, in _call_test_function
        return func(*args, **dargs)
      File "/home/azure/autotest/client/shared/test.py", line 291, in execute
        postprocess_profiled_run, args, dargs)
      File "/home/azure/autotest/client/shared/test.py", line 212, in _call_run_once
        self.run_once(*args, **dargs)
      File "/home/azure/autotest/client/tests/ubuntu_boot/ubuntu_boot.py", line 63, in run_once
        if not self.log_check():
      File "/home/azure/autotest/client/tests/ubuntu_boot/ubuntu_boot.py", line 25, in log_check
        if self.centos:
    AttributeError: 'ubuntu_boot' object has no attribute 'centos'

Fixes: e14cb0e1bd0c ("UBUNTU SAUCE: ubuntu_boot Centos Support")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at canonical.com>

---

Changes since v2:
1. Simplify the code and remove 'centos' variable.

Changes since v1:
1. Add prefix to subject
---
 ubuntu_boot/ubuntu_boot.py | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/ubuntu_boot/ubuntu_boot.py b/ubuntu_boot/ubuntu_boot.py
index a67f21d49fc7..8782818fdf01 100644
--- a/ubuntu_boot/ubuntu_boot.py
+++ b/ubuntu_boot/ubuntu_boot.py
@@ -12,17 +12,14 @@ class ubuntu_boot(test.test):
         cmd = 'yes "" | DEBIAN_FRONTEND=noninteractive apt-get install --yes --force-yes ' + ' '.join(pkgs)
         self.results = utils.system_output(cmd, retain_output=True)
 
+    def log_check(self):
+        '''Test for checking error patterns in log files'''
         '''Centos Specific Boot Test Checks'''
-        self.centos = False
         os_dist = platform.linux_distribution()[0].split(' ')[0]
-        if os_dist == 'CentOS':
-            self.centos = True
 
-    def log_check(self):
-        '''Test for checking error patterns in log files'''
         # dmesg will be cleared out in autotest with dmesg -c before the test starts
         # Let's check for /var/log/syslog instead
-        if self.centos:
+        if os_dist == 'CentOS':
             logfile = '/var/log/messages'
         else:
             logfile = '/var/log/syslog'
-- 
2.27.0