Fetch connections are not closed in when using jgit

[jl431]

FetchConnections are opened but never closed.

I think fetch connections should be closed in a finally block each time it is used within: com.houghtonassociates.bamboo.plugins.dao.jgit.JGitRepository.java

On lines 301, 359 and 385 connections are opened but never closed. It is causing an issue where it occupies a ssh connection until timeout.