RFR: 8344220: Remove calls to SecurityManager and doPrivileged in java.net.InetAddress and sun.net.util.IPAddressUtil after JEP 486 integration

[Aleksei Efimov]

This PR removes calls to and mentions of the `SecurityManager` and the `doPrivileged` from the `java.net.InetAddress` and `sun.net.util.IPAddressUtil` and related classes. 

Noteworthy changes:
- the default value (`30s`) of the `networkaddress.cache.ttl` security property responsible for successfull address lookups  kept unchanged, the mention of SM removed from the property description in the `net-properties.html` file.
- connect permission checks are removed from the `InetAddress`, and relevant classes, like `SocketPermission`. `SocketPermission.initEphemeralPorts` was also modified to remove `doPrivileged`.
- `RuntimePermission("inetAddressResolverProvider")` permission has been removed from the system-wide `InetAddressResolver` initialization code.

`tier1` to `tier3` tests show no relevant failures.

-------------

Commit messages:
 - 8344220: Remove calls to SecurityManager and doPrivileged in java.net.InetAddress and sun.net.util.IPAddressUtil after JEP 486 integration

Changes: https://git.openjdk.org/jdk/pull/22376/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22376&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8344220
  Stats: 226 lines in 6 files changed: 16 ins; 145 del; 65 mod
  Patch: https://git.openjdk.org/jdk/pull/22376.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22376/head:pull/22376

PR: https://git.openjdk.org/jdk/pull/22376