update Travis and Appveyor CI to SQ 5.6.1 and Scanner 2.6.1

[guwirth]

update Travis and Appveyor CI to SQ 5.6.1 and Scanner 2.6.1

• change "...Cannot find the file..." from INFO to WARN
• change "...The report ... seems to be empty" from INFO to WARN
• fix Travis build, see Buffer overflow in Java_java_net_Inet4AddressImpl_getLocalHostName of OpenJDK6 and OpenJDK 7 travis-ci/travis-ci#5227 (comment)
• close Travis build failing #932

[guwirth]

@jmecosta here also AppVeyor is failing. Maybe you can have a look....

[SonarOpenCommunityAdmin]

the only thing is see is this:

    But the analysis log contains a line matching
      .*INFO.*Cannot find the file .* skipping violations
      Traceback (most recent call last):
        File "c:\python27\lib\site-packages�ehave\model.py", line 1456, in run
          match.run(runner.context)
        File "c:\python27\lib\site-packages�ehave\model.py", line 1903, in run
          self.func(context, *args, **kwargs)
        File "integration-tests      eatures\steps est_execution_statistics.py", line 267, in step_impl
          assert contains_line_matching(context.log, context.text)
      AssertionError

      Captured logging:
      INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): localhost
      INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): localhost
      INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): localhost
    And the number of violations fed is 0

and now the scanner is given WARN instead of INFO

WARN: Cannot find the file 'C:\projects\sonar-cxx\integration-tests\testdata\cppcheck_project\component1.cc', skipping violations

Supose the feature needs to be updated, likely more of those should happen in Travis once is up

[guwirth]

@jmecosta thanks. Will change it from INFO to WARN and try it again.

[jmecosta]

can you change to this:
except Exception, e:
sys.stdout.write(RED + " str(e.errno) " + RESET)
sys.stdout.write(RED + " str(e) " + RESET)

so we can get error code about this.