pgsql: Have pg_upgrade's Makefile honor NO_TEMP_INSTALL

Have pg_upgrade's Makefile honor NO_TEMP_INSTALL

Backpatch to 9.5, when pg_upgrade's location changed.

Discussion: /messages/by-id/5506b8fa-7dad-8483-053c-7ca7ef04f01a@2ndQuadrant.com

Branch
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REL_11_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/4d6bd92db5105b8ecc2eedff430b080541a5e4de

Modified Files
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src/bin/pg_upgrade/Makefile | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)