Users may want to know which version of packages are used for the AMI, it's good to have it on AMI tags and description. To do this, we need to download .rpm from specified .repo, extract version information from .rpm. Fixes #4499 Signed-off-by: Takuya ASADA <syuu@scylladb.com> Message-Id: <20190520123924.14060-2-syuu@scylladb.com>