lit.cfg: Initialize remote_host if missing

This should fix the tests in litsupport-tests

git-svn-id: https://llvm.org/svn/llvm-project/test-suite/trunk@341224 91177308-0d34-0410-b5e6-96231b3b80d8

Author: MatzeB

lit.cfg

@@ -24,9 +24,11 @@ config.suffixes = ['.test']
 config.excludes = ['ABI-Testsuite']
 config.traditional_output = False
 config.single_source = False
-config.remote_host = lit_config.params.get('remote_host', config.remote_host)
 if 'SSH_AUTH_SOCK' in os.environ:
     config.environment['SSH_AUTH_SOCK'] = os.environ['SSH_AUTH_SOCK']
+if not hasattr(config, 'remote_host'):
+    config.remote_host = ""
+config.remote_host = lit_config.params.get('remote_host', config.remote_host)
 if config.remote_host:
     config.test_modules.append('remote')