[dist] Rpmlint: Silence script-without-shebang warnings

Since we soon switch to the bundle gems service we need to solve
some rpmlint issues caused by the new gem files we store in the
vendor/ directory.

Many of the bundled gems we package contain files with executable
bit. Since we won't be able to solve all them upstream in reasonable
time we disable that check.

dist/obs-rpmlintrc

@@ -6,3 +6,4 @@ addFilter('no-changelogname-tag')
 addFilter('hidden-file-or-dir')
 addFilter('zero-length')
 addFilter('files-duplicate')
+addFilter('script-without-shebang')