[crac] RFR: 8349819: [CRaC] Support FD policy reopen on listening socket [v2]

[Radim Vansa]

> Adds additional filtering option for `type: SOCKET` in OpenResourcePolicies: `listening: true` which is true for common server sockets. 
> With `action: reopen` these implement automatic close on checkpoint and reopening on restore, using the same local address (this obviously won't work well if the restore happens on a machine that does not have the IP used before checkpoint).

Radim Vansa has updated the pull request incrementally with one additional commit since the last revision:

  Apply review corrections

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Changes:
  - all: https://git.openjdk.org/crac/pull/204/files
  - new: https://git.openjdk.org/crac/pull/204/files/ed2c08c7..18abf315

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=crac&pr=204&range=01
 - incr: https://webrevs.openjdk.org/?repo=crac&pr=204&range=00-01

  Stats: 69 lines in 10 files changed: 52 ins; 7 del; 10 mod
  Patch: https://git.openjdk.org/crac/pull/204.diff
  Fetch: git fetch https://git.openjdk.org/crac.git pull/204/head:pull/204

PR: https://git.openjdk.org/crac/pull/204