Fail the the finish_release.sh script if the tag already exists locally
Fail the the finish_release.sh script if the tag already exists locally

Motivation:

We should fail the script if the tag already exists locally to ensure we really deploy the right code

Modifications:

Check if the tag already exists and if so print an error and exit

Result:

No risks to deploy wrong code as part of the release

doom369/netty,netty/netty,zer0se7en/netty,doom369/netty,Spikhalskiy/netty,ejona86/netty,tbrooks8/netty,zer0se7en/netty,Spikhalskiy/netty,ejona86/netty,doom369/netty,Spikhalskiy/netty,netty/netty,Spikhalskiy/netty,johnou/netty,NiteshKant/netty,tbrooks8/netty,NiteshKant/netty,Spikhalskiy/netty,doom369/netty,tbrooks8/netty,tbrooks8/netty,ejona86/netty,tbrooks8/netty,NiteshKant/netty,ejona86/netty,johnou/netty,johnou/netty,zer0se7en/netty,NiteshKant/netty,zer0se7en/netty,netty/netty,zer0se7en/netty,johnou/netty,ejona86/netty,netty/netty,netty/netty,NiteshKant/netty,johnou/netty,doom369/netty