FINERACT-2335: don't rename release tarballs

Release tarballs are currently renamed (without changing the contents): apache-fineract-src-1.12.1.tar.gz becomes apache-fineract-1.12.1-src.tar.gz . The former matches the exploded directory name, the latter does not. The difference is subtle but meaningful... I strongly prefer the former because it's less surprising / more common, and easier to work with from scripts.

There's no functional difference, this should only impact aesthetics.

I did also shorten `binary` to `bin` so release artifact name lengths match.

buildSrc/src/main/groovy/org.apache.fineract.release.gradle

@@ -176,8 +176,8 @@ fineract {
             description: 'Sign the distribution artifacts',
             gpg: [
                 files: [
-                    "${rootDir}/fineract-war/build/distributions/apache-fineract-${project.version}-src.tar.gz",
-                    "${rootDir}/fineract-war/build/distributions/apache-fineract-${project.version}-binary.tar.gz"
+                    "${rootDir}/fineract-war/build/distributions/apache-fineract-src-${project.version}.tar.gz",
+                    "${rootDir}/fineract-war/build/distributions/apache-fineract-bin-${project.version}.tar.gz"
                 ]
             ]
         ],