Move remaining Search integration tests from portal-impl to portal-search-test

• Type: Task
• Status: In Review
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: None
• Fix Version/s: None
• Component/s: Search Infrastructure > Framework
• Labels: None
• Priority Level: Low
• Git Pull Request: https://github.com/arboliveira/liferay-portal/pull/374

Remaining integration tests:

• BackupAndRestoreIndexesTest.java
• ElasticsearchRegistrationTest.java
• IndexerRegistryUtilTest.java