avocado.core.remote: Ignore `\r` when checking for avocado

The `re.MULTILINE` breaks the strings by `\n` but it ignores `\r`. Let's
accept optional `\r` at the end of the line. This helps when some broken
plugin spits additional lines after `avocado -v` output.
Signed-off-by: NLukáš Doktor <ldoktor@redhat.com>

avocado/core/remote/runner.py

@@ -42,7 +42,7 @@ class RemoteTestRunner(TestRunner):
 
     # Let's use re.MULTILINE because sometimes servers might have MOTD
     # that will introduce a line break on output.
-    remote_version_re = re.compile(r'^Avocado (\d+)\.(\d+)$',
+    remote_version_re = re.compile(r'^Avocado (\d+)\.(\d+)\r?$',
                                    re.MULTILINE)
 
     def __init__(self, job, test_result):