qa: revert "qa: use config_path property instead of literal"

qa/tasks/vstart_runner.py

@@ -635,7 +635,7 @@ def _write_conf(self):
         # In teuthology, we have the honour of writing the entire ceph.conf, but
         # in vstart land it has mostly already been written and we need to carefully
         # append to it.
-        conf_path = self.config_path
+        conf_path = "./ceph.conf"
         banner = "\n#LOCAL_TEST\n"
         existing_str = open(conf_path).read()
 
@@ -715,7 +715,7 @@ def __init__(self, ctx, fscid=None, name='cephfs', create=False):
 
         # Hack: cheeky inspection of ceph.conf to see what MDSs exist
         self.mds_ids = set()
-        for line in open(self.config_path).readlines():
+        for line in open("ceph.conf").readlines():
             match = re.match("^\[mds\.(.+)\]$", line)
             if match:
                 self.mds_ids.add(match.group(1))
@@ -849,7 +849,7 @@ def __init__(self):
         # Shove some LocalDaemons into the ctx.daemons DaemonGroup instance so that any
         # tests that want to look these up via ctx can do so.
         # Inspect ceph.conf to see what roles exist
-        for conf_line in open(self.config_path).readlines():
+        for conf_line in open("ceph.conf").readlines():
             for svc_type in ["mon", "osd", "mds", "mgr"]:
                 if svc_type not in self.daemons.daemons:
                     self.daemons.daemons[svc_type] = {}