Avoid imp usage in APT proxy test

tests/test_apt_proxy.py

@@ -5,46 +5,54 @@
 Criticality: Normal
 Checks that packages mirror works for capture systems
 '''
-import imp
+from pathlib import Path
 import os
 import requests
 import sys
 
-GREEN = '\033[92m'
-RED = '\033[91m'
-DEF = '\033[0m'
-
-if not os.path.exists('/etc/nginx/sites-enabled/skyreach.conf'):
-    print('Server not running Miris Manager, skipping test')
-    sys.exit(2)
-
-os.chdir(os.path.dirname(__file__))
-if not os.path.isfile('../utils.py'):
-    print('conf.sh not found')
-    sys.exit(1)
-
-es_utils = imp.load_source('es_utils', '../utils.py')
-conf = es_utils.load_conf()
-
-all_ok = True
-
-conf_servers = (
-    'CM_SERVER_NAME',
-)
+try:
+    from requests.packages.urllib3.exceptions import InsecureRequestWarning
+    requests.packages.urllib3.disable_warnings(InsecureRequestWarning)
+except ImportError:
+    requests.packages.urllib3.disable_warnings()
+
+sys.path.append(str(Path(__file__).parents[1].resolve()))
+
+# pylint: disable=wrong-import-position
+from envsetup import utils as u  # noqa: E402
+
+
+def main():
+    # get Miris Manager domain
+    path = '/etc/nginx/sites-enabled/skyreach.conf'
+    if not os.path.exists(path):
+        u.log('Server not running Miris Manager, skipping test')
+        return 2
+    domain = None
+    with open(path, 'r') as fo:
+        for line in fo:
+            if line.strip().startswith('server_name'):
+                domain = line.strip()[len('server_name'):].strip(' \t;').split(' ')[0]
+    if not domain:
+        u.error('Miris Manager domain not found in Nginx configuration.')
+        return 1
 
-for s in conf_servers:
-    v = conf.get(s)
     try:
-        url = 'https://%s/panel.ubicast.eu/old-releases.ubuntu.com/ubuntu/dists/lucid/Release.gpg' % v
-        print('Checking url certificate %s' % url)
-        d = requests.get(url, verify=False).text
-        if 'BEGIN PGP SIGNATURE' not in d:
-            all_ok = False
-            print('%sUnexpected content: %s%s' % (RED, d, DEF))
+        url = 'https://%s/panel.ubicast.eu/old-releases.ubuntu.com/ubuntu/dists/lucid/Release.gpg' % domain
+        u.log('Checking url certificate "%s"...' % url)
+        response = requests.get(url, verify=False).text
+        if 'BEGIN PGP SIGNATURE' not in response:
+            u.error('Unexpected content:\n%s' % response)
+            return 1
         else:
-            print('%sTest OK%s' % (GREEN, DEF))
-    except Exception:
-        print('%sPackage mirror not working%s' % (RED, DEF))
-        all_ok = False
+            u.success('Test OK.')
+    except Exception as e:
+        u.error('Package mirror not working: %s' % e)
+        return 1
+
+    return 0
+
 
-sys.exit(int(not all_ok))
+if __name__ == '__main__':
+    code = main()
+    sys.exit(code)