Add missing quotes to `%if` expressions in spec template. Required by rpmbuild 4.16.0
------------- Commit messages: - 8257434: jpackage fails to create rpm on Fedora Linux Changes: https://git.openjdk.java.net/jdk/pull/1551/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=1551&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8257434 Stats: 6 lines in 1 file changed: 0 ins; 0 del; 6 mod Patch: https://git.openjdk.java.net/jdk/pull/1551.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/1551/head:pull/1551 PR: https://git.openjdk.java.net/jdk/pull/1551
