build: update release version string acceptance test

The accepted release version strings are

   Official releases:
       major.minor[.patch]              e.g. 3.0, 3.0.1

   Release Candidates:
       major.minor[.patch]-rc.*         e.g. 3.0-rc.1, 3.0.1-rc.1

   Development versions:
       alpha: major.minor[.patch]-a.*   e.g. 3.0-a.1, 3.0.1-a.1
       beta:  major.minor[.patch]-b.*   e.g. 3.0-b.1, 3.0.1-b.1

Update the regex accordingly.

Signed-off-by: Daniel Wagner <[email protected]>

Author: igaw

scripts/release.sh

@@ -67,7 +67,7 @@ trap cleanup EXIT
 register_cleanup
 
 # expected version regex
-re='^v([0-9]+\.[0-9]+(\.[0-9]+)?)(-rc[0-9]+)?$'
+re='^v([0-9]+\.[0-9]+(\.[0-9]+)?)(-(rc|a|b)\.[0-9]+)?$'
 
 # use the version string provided from the command line
 if [[ "$VERSION" =~ ${re} ]]; then