scylladb

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Botond Dénes cccf726b54 Merge '[Backport 2025.2] test: introduce upgrade tests to test.py, add a SSTable dict compression upgrade test' from Michał Chojnowski

This PR adds an upgrade test for SSTable compression with shared dictionaries, and adds some bits to pylib and test.py to support that.

In the series, we:

1. Mount $XDG_CACHE_DIR into dbuild.
2. Add a pylib function which downloads and installs a released ScyllaDB package into a subdirectory of $XDG_CACHE_DIR/scylladb/test.py, and returns the path to bin/scylla.
3. Add new methods and params to the cluster manager, which let the test start nodes with historical Scylla executables, and switch executables during the test.
4. Add a test which uses the above to run an upgrade test between the released package and the current build.
5. Add --run-internet-dependent-tests to test.py which lets the user of test.py skip this test (and potentially other internet-dependent tests in the future).

(The patch modifying wait_for_cql_and_get_hosts is a part of the new test — the new test needs it to test how particular nodes in a mixed-version cluster react to some CQL queries.)

This is a follow-up to https://github.com/scylladb/scylladb/pull/23025, split into a separate PR because the potential addition of upgrade tests to test.py deserved a separate thread.

Needs backport to 2025.2, because that's where the tested feature is introduced.

Fixes https://github.com/scylladb/scylladb/issues/24110

- (cherry picked from commit 63218bb094)
- (cherry picked from commit cc7432888e)
- (cherry picked from commit 34098fbd1f)
- (cherry picked from commit 2ef0db0a6b)
- (cherry picked from commit 1ff7e09edc)
- (cherry picked from commit 5da19ff6a6)
- (cherry picked from commit d3cb873532)
- (cherry picked from commit dd878505ca)

Parent PR: https://github.com/scylladb/scylladb/pull/23538

Closes scylladb/scylladb#25158

* github.com:scylladb/scylladb:
  test: add test_sstable_compression_dictionaries_upgrade.py
  test.py: add --run-internet-dependent-tests
  pylib/manager_client: add server_switch_executable
  test/pylib: in add_server, give a way to specify the executable and version-specific config
  pylib: pass scylla_env environment variables to the topology suite
  test/pylib: add get_scylla_2025_1_executable()
  pylib/scylla_cluster: give a way to pass executable-specific options to nodes
  dbuild: mount "$XDG_CACHE_HOME/scylladb"