Test: Update misc ipa tests to work correctly on stig

The custom ssh library previously used in the tests does not work
correctly on stig as the test are testing sudo, replacing ssh
with su to switch user.

(cherry picked from commit 07401d6)

Author: jakub-vavra-cz

src/tests/multihost/ipa/test_misc.py

@@ -16,7 +16,6 @@
 import pytest
 from sssd.testlib.common.utils import sssdTools
 from sssd.testlib.common.exceptions import SSSDException
-from sssd.testlib.common.ssh2_python import run_command_client
 
 
 @pytest.mark.usefixtures('default_ipa_users', 'reset_password')
@@ -335,7 +334,7 @@ def test_authentication_indicators(multihost, backupsssdconf):
         multihost.client[0].run_command(
             f'su -l {user} -c "ipa sudorule-add-user testrule2 --users admin"',
             raiseonerr=False)
-        run_command_client(multihost, user, test_password, "sudo -l")
+        multihost.client[0].run_command(f'su -l {user} -c "sudo -l"')
         time.sleep(3)
         search = multihost.client[0].run_command(
             'fgrep gssapi_ /var/log/sssd/sssd_pam.log | tail -10')
@@ -347,8 +346,7 @@ def test_authentication_indicators(multihost, backupsssdconf):
         multihost.client[0].run_command(
             f'su -l {user} -c "kinit admin"', stdin_text=test_password,
             raiseonerr=False)
-        run_command_client(multihost, user, test_password, "sudo -l")
-
+        multihost.client[0].run_command(f'su -l {user} -c "sudo -l"')
         multihost.client[0].run_command(
             f'su -l {user} -c "klist"', raiseonerr=False)
         multihost.client[0].run_command(
@@ -423,9 +421,10 @@ def test_pass_krb5cname_to_pam(multihost,
         multihost.client[0].run_command(
             f'su -l {user} -c "sudo -S -l"', stdin_text=test_password,
             raiseonerr=False)
-        result = run_command_client(multihost, user, test_password,
-                                    'echo -e "Secret123" | sudo -S /usr/sbin/sssctl domain-list')
-        assert domain_name in result
+        result = multihost.client[0].run_command(
+            f'su -l {user} -c "echo -e \"Secret123\" | sudo -S /usr/sbin/sssctl domain-list"'
+        )
+        assert domain_name in result.stdout_text
 
     @staticmethod
     def test_ssh_hash_knownhosts(multihost, reset_password, backupsssdconf):
@@ -606,7 +605,7 @@ def test_ssh_expiration_warning(multihost, reset_password, hbac_sshd_rule,
 
         # Test result evaluation
         assert ssh_cmd.returncode == 0, "Ssh login failed."
-        assert "Your password will expire in " in ssh_cmd.stdout_text,\
+        assert "Your password will expire in " in ssh_cmd.stdout_text, \
             "The password expiration notice was not shown."
 
     @staticmethod