$ in aim.conf is interpreted as special character

[irathore]

If there is $ in one of the entries e.g.:

In ciscoaci-config.yaml

ACIApicPassword: '$itest$passwd'

Or in aim.conf

apic_password=$itest$passwd

Causes an error. The '$' character has to be escaped like:

ACIApicPassword: ='\$itest\$passwd'

Which results in below in aim.conf

apic_password=\$itest\$passwd

Otherwise this error is seen during aimctl config update

[neutron@overcloud-controller-0 /]$ aimctl config update
Deprecated: Option "rabbit_use_ssl" from group "oslo_messaging_rabbit" is deprecated. Use option "ssl" from group "oslo_messaging_rabbit".
Traceback (most recent call last):
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 3251, in __getitem__
    value = self.conf._get(option, group=group,
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2657, in _get
    value, loc = self._do_get(name, group, namespace)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2675, in _do_get
    info = self._get_opt_info(name, group)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2880, in _get_opt_info
    raise NoSuchOptError(opt_name, group)
oslo_config.cfg.NoSuchOptError: no such option i in group [apic]

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/aimctl", line 10, in <module>
    sys.exit(aimctl())
  File "/usr/lib/python3.9/site-packages/aim/tools/services/cli.py", line 21, in aimctl
    shell.run()
  File "/usr/lib/python3.9/site-packages/aim/tools/cli/shell.py", line 27, in run
    aim(auto_envvar_prefix='AIM')
  File "/usr/lib/python3.9/site-packages/click/core.py", line 721, in __call__
    return self.main(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/click/core.py", line 696, in main
    rv = self.invoke(ctx)
  File "/usr/lib/python3.9/site-packages/click/core.py", line 1065, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/lib/python3.9/site-packages/click/core.py", line 1065, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/lib/python3.9/site-packages/click/core.py", line 894, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/lib/python3.9/site-packages/click/core.py", line 534, in invoke
    return callback(*args, **kwargs)
  File "/usr/lib/python3.9/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/usr/lib/python3.9/site-packages/aim/tools/cli/commands/config.py", line 37, in update
    ctx.obj['manager'].to_db(ctx.obj['conf'], host=host)
  File "/usr/lib/python3.9/site-packages/aim/config.py", line 249, in to_db
    configs = self._to_query_format(cfg_obj, host=host)
  File "/usr/lib/python3.9/site-packages/aim/config.py", line 234, in _to_query_format
    raise e
  File "/usr/lib/python3.9/site-packages/aim/config.py", line 230, in _to_query_format
    value = getattr(getattr(cfg_obj, group), k)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 3165, in __getattr__
    return self._conf._get(name, self._group)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2657, in _get
    value, loc = self._do_get(name, group, namespace)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2720, in _do_get
    return (convert(val), alt_loc)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2690, in convert
    self._substitute(value, group, namespace), opt)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2790, in _substitute
    ret = tmpl.safe_substitute(
  File "/usr/lib64/python3.9/string.py", line 142, in safe_substitute
    return self.pattern.sub(convert, self.template)
  File "/usr/lib64/python3.9/string.py", line 133, in convert
    return str(mapping[named])
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 3254, in __getitem__
    value = self.conf._get(key, namespace=self.namespace)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2657, in _get
    value, loc = self._do_get(name, group, namespace)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2675, in _do_get
    info = self._get_opt_info(name, group)
  File "/usr/lib/python3.9/site-packages/oslo_config/cfg.py", line 2880, in _get_opt_info
    raise NoSuchOptError(opt_name, group)
oslo_config.cfg.NoSuchOptError: no such option i in group [DEFAULT]