Ensure that security properties are only overridden if the override security properties file exists. Refactored some of the code in Security class initialization also. Extra test coverage for security properties file options.
------------- Commit messages: - Merge branch 'master' into 8292297-securityConf - Correct URL syntax - fix early initization issue and expand testing - 8292297 initial commit Changes: https://git.openjdk.org/jdk/pull/10251/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10251&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8292297 Stats: 165 lines in 3 files changed: 69 ins; 70 del; 26 mod Patch: https://git.openjdk.org/jdk/pull/10251.diff Fetch: git fetch https://git.openjdk.org/jdk pull/10251/head:pull/10251 PR: https://git.openjdk.org/jdk/pull/10251
