Make BeakerLib logging less verbose

Logs from Beaker jobs are normally very brief, with the standard
output/error containing detailed information. Make ipa-run-tests
with BeakerLib plugin follow this convention.

Only include INFO and higher level messages in the Beaker logs.
Downgrade several message levels to DEBUG.
Log to console using Python logging instead of showing the Beaker logs.

Since ipa-run-tests sets up its own logging, Nose's own log
handling just causes duplicate messages. Disable it with --nologcapture.

ipatests/beakerlib_plugin.py

@@ -76,7 +76,9 @@ class BeakerLibPlugin(Plugin):
 
         # Set up the Bash process
         self.bash = subprocess.Popen(['bash'],
-                                     stdin=subprocess.PIPE)
+                                     stdin=subprocess.PIPE,
+                                     stdout=open('/dev/null', 'w'),
+                                     stderr=open('/dev/null', 'w'))
         source_path = os.path.join(self.env['BEAKERLIB'], 'beakerlib.sh')
         self.run_beakerlib_command(['.', source_path])
 
@@ -88,16 +90,12 @@ class BeakerLibPlugin(Plugin):
         self.setup_log_handler(BeakerLibLogHandler(self.run_beakerlib_command))
 
     def setup_log_handler(self, handler):
-        # Remove the console handler (BeakerLib will print to stderr)
-        if 'console' in log_mgr.handlers:
-            log_mgr.remove_handler('console')
-        # Configure our logger
         log_mgr.configure(
             {
                 'default_level': 'DEBUG',
                 'handlers': [{'log_handler': handler,
                               'format': '[%(name)s] %(message)s',
-                              'level': 'debug'}]},
+                              'level': 'info'}]},
             configure_state='beakerlib_plugin')
 
     def run_beakerlib_command(self, cmd):
@@ -207,7 +205,6 @@ class BeakerLibPlugin(Plugin):
                 tarname = os.path.join(dirname, 'logs.tar.xz')
                 with open(tarname, 'w') as f:
                     f.write(cmd.stdout_text)
-                self.log.info('%s', dirname)
                 ipautil.run(['tar', 'xJvf', 'logs.tar.xz'], cwd=dirname)
                 os.unlink(tarname)
 
@@ -219,7 +216,7 @@ class BeakerLibPlugin(Plugin):
                     for filename in filenames:
                         fullname = os.path.relpath(
                             os.path.join(dirpath, filename), topdirname)
-                        self.log.info('Submitting file: %s', fullname)
+                        self.log.debug('Submitting file: %s', fullname)
                         self.run_beakerlib_command(['rlFileSubmit', fullname])
                 self.run_beakerlib_command(['popd'])