[IGNITE-12707] Update release branch version for 2.8

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8
• Ignite Flags: Docs Required, Release Notes Required
• Assignee: Maxim Muzafarov
• Reporter: Maxim Muzafarov
• Created: 20/Feb/20 11:13
• Updated: 21/Feb/20 14:53
• Resolved: 21/Feb/20 14:53

Description

The following need to be done:
1. Update pom.xml version to 2.8.0
2. Update Linux package version to 2.8.0

Issue Links

• links to: GitHub Pull Request #7458