Fix ansible-test encoding issues for exceptions.

(cherry picked from commit 0d7a156319)

test/runner/lib/cli.py

@@ -91,10 +91,10 @@ def main():
 
         display.review_warnings()
     except ApplicationWarning as ex:
-        display.warning(str(ex))
+        display.warning(u'%s' % ex)
         exit(0)
     except ApplicationError as ex:
-        display.error(str(ex))
+        display.error(u'%s' % ex)
         exit(1)
     except KeyboardInterrupt:
         exit(2)

test/runner/lib/cover.py

@@ -76,7 +76,7 @@ def command_coverage_combine(args):
         try:
             original.read_file(coverage_file)
         except Exception as ex:  # pylint: disable=locally-disabled, broad-except
-            display.error(str(ex))
+            display.error(u'%s' % ex)
             continue
 
         for filename in original.measured_files():

test/runner/lib/target.py

@@ -32,7 +32,7 @@ def find_target_completion(target_func, prefix):
         matches = walk_completion_targets(targets, prefix, short)
         return matches
     except Exception as ex:  # pylint: disable=locally-disabled, broad-except
-        return [str(ex)]
+        return [u'%s' % ex]
 
 
 def walk_completion_targets(targets, prefix, short=False):