Fix json parsing in show

Author: vshepard

testgres/plugins/pg_probackup2/pg_probackup2/app.py

@@ -432,6 +432,9 @@ def show(
             try:
                 if expect_error:
                     return text_json
+                index_of_bracket = text_json.find('[')
+                if index_of_bracket != -1:
+                    text_json = text_json[index_of_bracket:]
                 data = json.loads(text_json)
             except ValueError:
                 assert False, f"Couldn't parse {text_json} as json. " \

testgres/plugins/pg_probackup2/setup.py

@@ -4,7 +4,7 @@
     from distutils.core import setup
 
 setup(
-    version='0.0.2',
+    version='0.0.3',
     name='testgres_pg_probackup2',
     packages=['pg_probackup2', 'pg_probackup2.storage'],
     description='Plugin for testgres that manages pg_probackup2',