cli_tests.cfg: fix the Upgrade group's first setup step.
A live
'p4 print' against the Classic depot failed when actually run
through the test harness: /opt/perforce/dev/sdp/.p4config.local is
the DVCS clone's own local on-demand-p4d shadow config (P4PORT=
rsh:...), not a real network connection, and the harness's own
sandboxed test environment has no other P4 connection info
available (confirmed via a real run: "TCP connect to
perforce:1666 failed"). Switched to a checked-in static fixture
(test_fixtures/install_sdp.2025.2-Patch1.sh, added in a companion
change) instead of a live cross-depot fetch at test-time -- more
robust for automated, repeatable testing anyway.