integration-test: Fix invalid escaping

[tbzatek]

Python 3.12 complains:
integration-test:401: SyntaxWarning: invalid escape sequence '$'
subst_re = re.compile('${([a-zA-Z_]+)}')
integration-test:1047: SyntaxWarning: invalid escape sequence '\m'
l = 'n"a\m\"e' + fs_type
integration-test:1053: SyntaxWarning: invalid escape sequence '\m'
l = 'n"a\m\"exft'

[tbzatek]

Not sure what to replace the \m with...

[vojtechtrefny]

I think it would be better to use raw strings (prefix the string with r'...') instead of escaping.

[tbzatek]

I think it would be better to use raw strings (prefix the string with r'...') instead of escaping.

Something like this?

[vojtechtrefny]

Looks good to me, thank you.

[vojtechtrefny]

Looks like there are two more instances of this in the dbus tests:

/home/jenkins/workspace/udisks-pr/arch/x86_64/distro/f_rawhide/type/udisks/src/tests/dbus-tests/test_30_iscsi.py:167: SyntaxWarning: invalid escape sequence '\('
  msg = 'Login failed: initiator reported error \(24 - iSCSI login failed due to authorization failure\)'
/home/jenkins/workspace/udisks-pr/arch/x86_64/distro/f_rawhide/type/udisks/src/tests/dbus-tests/test_80_filesystem.py:485: SyntaxWarning: invalid escape sequence '\('
  _ret, out = self.run_command('mount | grep %s | sed "s/.*(\(.*\))/\\1/"' % block_fs_dev)

[tbzatek]

Looks like there are two more instances of this in the dbus tests:

Good catch, fixed as well.