[tests-only] add API tests to search user/group with special chars

[saw-jan]

Description

Added the following user/group search scenarios:

Scenario Outline: user searches for groups with special characters (search term with quotation)
      | tea-lovers | -lovers |
      | tea@lovers | @lovers |
      | -_.ocgrp   | -_.     |
      | _ocgrp@    | _oc     |
Scenario: user searches for a non-existent user/group
Scenario Outline: user searches for other users having special characters in displayname (search term with quotation)
      | -_.ocusr         | -_.         |
      | _ocusr@          | _oc         |
      | Alice-Wonderland | -Wonderland |
      | Alice@Wonderland | @Wonderland |

Taken from owncloud/web#10858

Related Issue

• Stop support for old acceptance tests web#10259

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

[sonarcloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud