* continue to use provided 'release' value if specified
* continue to use 'edge' for edge versions
* deduce 'release' value from the version on the alpine-base APK in https://dl-cdn.alpinelinux.org/alpine/v<version/main/<arch>/
* update test profile with 3.13
* switch build name from 'current-x86_64' to 'v#_#-x86_64' to avoid any confusion when new versions roll out
* resolvie-alpine.py.in - only warn about disabled regions once, instead of for each profile build
* make-amis - tweak script output
* new set of AMIs for edge, 3.10.0, and 3.9.4