directives in stash-config.properties with trailing spaces at the end of the directive line are not parsed

This was caught when testing the ff-only on the stash-config.properties.

This option does not work if an extra space is added to the end of the line.

plugin.stash-scm-git.pullrequest.merge.strategy.ANDROID=ff-only  
plugin.stash-scm-git.pullrequest.merge.strategy.IOS=ff-only  

When defining the parameters above as defined in our documentation, the option won't work if that there are spaces at the end of the above lines settings in your stash-config.properties.

Fix: Remove the extra spaces at the end of the lines and restart Stash.