Hmm ... It's impossible ;-) This RPM doesn't exist on any FTP server

Provides :
postgresql-contrib
postgresql-contrib(x86-32)

Requires :

postgresql(x86-32) = 9.2.21-1.el7
libossp-uuid.so.16
libpthread.so.0
libcrypto.so.10(libcrypto.so.10)
libcrypto.so.10
rtld(GNU_HASH)
postgresql-libs(x86-32) = 9.2.21-1.el7
libm.so.6
libc.so.6(GLIBC_2.4)
libselinux.so.1
libpq.so.5
libz.so.1
libxslt.so.1
libc.so.6(GLIBC_2.1.3)
libxslt.so.1(LIBXML2_1.0.22)
libxslt.so.1(LIBXML2_1.0.11)
rpmlib(PayloadIsXz) <= 5.2-1
libpthread.so.0(GLIBC_2.1)
libc.so.6(GLIBC_2.2)
libssl.so.10(libssl.so.10)
libc.so.6(GLIBC_2.0)
libc.so.6(GLIBC_2.1.2)
libxslt.so.1(LIBXML2_1.0.18)
libpthread.so.0(GLIBC_2.0)
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
libssl.so.10
libc.so.6(GLIBC_2.3)
libm.so.6(GLIBC_2.0)
libxml2.so.2
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(CompressedFileNames) <= 3.0.4-1
libcrypt.so.1
libc.so.6(GLIBC_2.1)
libxml2.so.2(LIBXML2_2.4.30)
libcrypt.so.1(GLIBC_2.0)
libc.so.6(GLIBC_2.15)
libc.so.6
libc.so.6(GLIBC_2.3.4)

Content of RPM :
/usr/bin/oid2name
/usr/bin/pg_archivecleanup
/usr/bin/pg_standby
/usr/bin/pg_test_fsync
/usr/bin/pg_test_timing
/usr/bin/pgbench
/usr/bin/vacuumlo
/usr/lib/pgsql/_int.so
/usr/lib/pgsql/adminpack.so
/usr/lib/pgsql/auth_delay.so
/usr/lib/pgsql/auto_explain.so
/usr/lib/pgsql/autoinc.so
/usr/lib/pgsql/btree_gin.so
/usr/lib/pgsql/btree_gist.so
/usr/lib/pgsql/chkpass.so
/usr/lib/pgsql/citext.so
/usr/lib/pgsql/cube.so
/usr/lib/pgsql/dblink.so
/usr/lib/pgsql/dict_int.so
/usr/lib/pgsql/dict_xsyn.so
/usr/lib/pgsql/dummy_seclabel.so
/usr/lib/pgsql/earthdistance.so
/usr/lib/pgsql/file_fdw.so
/usr/lib/pgsql/fuzzystrmatch.so
/usr/lib/pgsql/hstore.so
/usr/lib/pgsql/insert_username.so
/usr/lib/pgsql/isn.so
/usr/lib/pgsql/lo.so
/usr/lib/pgsql/ltree.so
/usr/lib/pgsql/moddatetime.so
There is 176 files more in these RPM.