pgsql: pg_upgrade: fix shutdown check for standby servers

pg_upgrade: fix shutdown check for standby servers

Commit 244142d32afd02e7408a2ef1f249b00393983822 only tested for the
pg_controldata output for primary servers, but standby servers have
different "Database cluster state" output, so check for that too.

Diagnosed-by: Michael Paquier

Discussion: /messages/by-id/20180810164240.GM13638@paquier.xyz

Backpatch-through: 9.3

Branch
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REL_11_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/995133410de7c0f3670022d0d7d982f6e8f81bc0

Modified Files
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src/bin/pg_upgrade/controldata.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)