Adjust pi.cfg to use audit keys from os env (#17)

Author: werner-timo

conf/pi.cfg

@@ -6,12 +6,12 @@ pi_os_special_vars = {
     'SUPERUSER_REALM': os.getenv("SUPERUSER_REALM","admin,helpdesk").split(','),
     'PI_ENCFILE' : '/privacyidea/etc/persistent/enckey',
     'PI_SCRIPT_HANDLER_DIRECTORY' : '/privacyidea/scripts',
-    'PI_AUDIT_KEY_PRIVATE' : '/privacyidea/etc/persistent/private.pem',
-    'PI_AUDIT_KEY_PUBLIC' : '/privacyidea/etc/persistent/public.pem',
+    'PI_AUDIT_KEY_PRIVATE' : os.getenv("PI_AUDIT_KEY_PRIVATE", '/privacyidea/etc/persistent/private.pem'),
+    'PI_AUDIT_KEY_PUBLIC' : os.getenv("PI_AUDIT_KEY_PUBLIC", '/privacyidea/etc/persistent/public.pem'),
     'PI_AUDIT_SQL_TRUNCATE' : os.getenv("PI_AUDIT_SQL_TRUNCATE",True),
     'PI_ENGINE_REGISTRY_CLASS': os.getenv("PI_REGISTRY_CLASS", "shared"),
     'PI_AUDIT_POOL_SIZE' : os.getenv("PI_AUDIT_POOL_SIZE", "20"),
-    'PI_AUDIT_NO_SIGN' : os.getenv("PI_AUDIT_POOL_SIZE", False),
+    'PI_AUDIT_NO_SIGN' : os.getenv("PI_AUDIT_NO_SIGN", False),
     'PI_LOGCONFIG' : '/privacyidea/etc/logging.cfg',
     'PI_LOGLEVEL' : logging.getLevelName(os.getenv("PI_LOGLEVEL", "INFO").upper()),
     'PI_UUID_FILE' : '/privacyidea/etc/persistent/uuid.txt',