[PLAT-14435]Fix args parsing in failure detection py script

Summary:
Key value parsing fails for values which contain `=`
Eg: For `--ysql_pg_conf_csv="shared_preload_libraries=passwordcheck"`
the script fails with
```
Traceback (most recent call last):
  File "/home/yugabyte/disk_io_failure_detection_py3.py", line 157, in <module>
    config_dict = parse_config_file(DEFAULT_HOME_DIR + process + CONF_PATH)
  File "/home/yugabyte/disk_io_failure_detection_py3.py", line 121, in parse_config_file
    key, value = line[2:].split('=')
ValueError: too many values to unpack (expected 2)
```
Update the script to split after the first `=`.

Test Plan: This fix was tested in fidelity's env.

Reviewers: vpatibandla

Reviewed By: vpatibandla

Subscribers: yugaware

Differential Revision: https://phorge.dev.yugabyte.com/D38213

managed/scripts/disk-io-failure/disk_io_failure_detection.py

@@ -122,7 +122,7 @@ def parse_config_file(config_path):
         with open(config_path, 'r') as file:
             for line in file:
                 line = line.strip()
-                key, value = line[2:].split('=')
+                key, value = line[2:].split('=', 1)
                 if key == PROCESS_NAMES_ARG:
                     args[key] = value.split()
                 elif key == TIME_LIMIT_ARG:

managed/scripts/disk-io-failure/disk_io_failure_detection_py3.py

@@ -116,7 +116,7 @@ def parse_config_file(config_path):
             for line in file:
                 line = line.strip()
                 if line.startswith(DOUBLE_HYPHEN):
-                    key, value = line[2:].split('=')
+                    key, value = line[2:].split('=', 1)
                     if key == PROCESS_NAMES_ARG:
                         args[key] = value.split()
                     elif key == TIME_LIMIT_ARG: