2825 fix multigroups

[CamiRomero]

Related issue
2825

Description

Working on wazuh/wazuh#10771, the core team detected that there are affected tests by the new changes.

The objective of this PR is to perform the refactor of each affected test.

Configuration options

Local internal options

remoted.debug=2
wazuh_database.interval=1
wazuh_db.commit_time=2
wazuh_db.commit_time_max=3
monitord.rotate_log=0

Logs example

Tests Results

Test Path	Os/Type	Execution Type	Results	Date	By
integration/test_remoted/test_multi_groups/test_merged_mg_file_content.py	CentOS - Manager	Jenkins	🟢🟢🟢	25/04/2022	@CamiRomero

• Proven that tests pass when they have to pass.
• Proven that tests fail when they have to fail.

• Python codebase satisfies PEP-8 style style guide. pycodestyle --max-line-length=120 --show-source --show-pep8 file.py.
• Python codebase is documented following the Google Style for Python docstrings.
• The test is documented in wazuh-qa/docs.
• provision_documentation.sh generate the docs without errors.

[damarisg]

Tests Results

Test Path	Os/Type	Execution Type	Results	Date	By
test_remoted/	CentOS - Manager	Jenkins	🟢	25/04/2022	Seyla
test_wazuh_db/	CentOS - Manager	Jenkins	🟢	25/04/2022	Seyla
test_authd/	CentOS - Manager	Jenkins	🟢	25/04/2022	Seyla