Integrated: 8257434: jpackage fails to create rpm on Fedora Linux

[Alexey Semenyuk]

Add missing quotes to `%if` expressions in spec template. Required by rpmbuild 4.16.0

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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