Create default config files for Wazuh

[AlexRuiz7]

Description

We need to create the default configuration files for Wazuh. More precisely, the opensearch_dashboards.yml file.

Also, some of the base changes were applied directly to the source code, and later had to be reverted due to tests not passing. These changes will be applied using the corresponding configuration options.

Changes

• Replace redirection to /home with /app/wazuh #17
• expandedHeader

[AlexRuiz7]

opensearch_dashboards.yml

This file is included in the production archives as is. This means that whatever is in this file at the moment of building the app is included in the resulting packages.

Here's the content that should contain this file after installing the app.
Note that the security plugin is installed by default, hence the opensearch_security options.

server.host: 0.0.0.0
server.port: 443
opensearch.hosts: https://localhost:9200
opensearch.ssl.verificationMode: certificate
#opensearch.username:
#opensearch.password:
opensearch.requestHeadersAllowlist: ["securitytenant","Authorization"]
opensearch_security.multitenancy.enabled: false
opensearch_security.readonly_mode.roles: ["kibana_read_only"]
server.ssl.enabled: true
server.ssl.key: "/etc/wazuh-dashboard/certs/dashboard-key.pem"
server.ssl.certificate: "/etc/wazuh-dashboard/certs/dashboard.pem"
opensearch.ssl.certificateAuthorities: ["/etc/wazuh-dashboard/certs/root-ca.pem"]
uiSettings.overrides.defaultRoute: /app/wazuh

opensearchDashboards.branding:
  useExpandedHeader: false

This content must only be added after the security and Wazuh plugins have been included, otherwise the app won't work properly. See the Assemblestage here.

[AlexRuiz7]

We are deciding where to store the default configuration file.

[yenienserrano]

Re-opened in #53

See #1 (comment) for details.