BUG #15563: postgresql11-server must require postgresql-llvmjit

The following bug has been logged on the website:

Bug reference: 15563
Logged by: Viorel Tabara
Email address: viorel(dot)tabara(at)infrabit(dot)net
PostgreSQL version: 11.1
Operating system: Linux - Fedora 29
Description:

The PostgreSQL binary shipped with the RPM is compiled with LLVM support and
according to the documentation the default provider is 'llvmjit'. Therefore
it would make sense to require 'postgresql-llvmjit' so JIT works out of the
box.

omiday ~ $ rpm -qa "postgresql11*"
postgresql11-server-11.1-1PGDG.f29.x86_64
postgresql11-libs-11.1-1PGDG.f29.x86_64
postgresql11-11.1-1PGDG.f29.x86_64

omiday ~ $ rpm -qaR "postgresql11*" | sort -u
/bin/sh
config(postgresql11-libs) = 11.1-1PGDG.f29
config(postgresql11-server) = 11.1-1PGDG.f29
glibc
libcrypto.so.1.1()(64bit)
libcrypto.so.1.1(OPENSSL_1_1_0)(64bit)
libc.so.6()(64bit)
libc.so.6(GLIBC_2.11)(64bit)
libc.so.6(GLIBC_2.14)(64bit)
libc.so.6(GLIBC_2.15)(64bit)
libc.so.6(GLIBC_2.2.5)(64bit)
libc.so.6(GLIBC_2.3.2)(64bit)
libc.so.6(GLIBC_2.3.3)(64bit)
libc.so.6(GLIBC_2.3.4)(64bit)
libc.so.6(GLIBC_2.3)(64bit)
libc.so.6(GLIBC_2.4)(64bit)
libc.so.6(GLIBC_2.6)(64bit)
libc.so.6(GLIBC_2.7)(64bit)
libc.so.6(GLIBC_2.9)(64bit)
libdl.so.2()(64bit)
libdl.so.2(GLIBC_2.2.5)(64bit)
libecpg.so.6()(64bit)
libgssapi_krb5.so.2()(64bit)
libgssapi_krb5.so.2(gssapi_krb5_2_MIT)(64bit)
libicu
libicui18n.so.62()(64bit)
libicuuc.so.62()(64bit)
libldap-2.4.so.2()(64bit)
libldap_r-2.4.so.2()(64bit)
libm.so.6()(64bit)
libm.so.6(GLIBC_2.2.5)(64bit)
libpam.so.0()(64bit)
libpam.so.0(LIBPAM_1.0)(64bit)
libpgtypes.so.3()(64bit)
libpq.so.5()(64bit)
libpthread.so.0()(64bit)
libpthread.so.0(GLIBC_2.2.5)(64bit)
libreadline.so.7()(64bit)
librt.so.1()(64bit)
librt.so.1(GLIBC_2.2.5)(64bit)
libssl.so.1.1()(64bit)
libssl.so.1.1(OPENSSL_1_1_0)(64bit)
libsystemd.so.0()(64bit)
libsystemd.so.0(LIBSYSTEMD_209)(64bit)
libxml2.so.2()(64bit)
libxml2.so.2(LIBXML2_2.4.30)(64bit)
libxml2.so.2(LIBXML2_2.6.0)(64bit)
libz.so.1()(64bit)
postgresql11-libs(x86-64) = 11.1-1PGDG.f29
postgresql11(x86-64) = 11.1-1PGDG.f29
rpmlib(CompressedFileNames) <= 3.0.4-1
rpmlib(FileDigests) <= 4.6.0-1
rpmlib(PayloadFilesHavePrefix) <= 4.0-1
rpmlib(PayloadIsXz) <= 5.2-1
rtld(GNU_HASH)
/sbin/ldconfig
systemd
systemd-sysv
/usr/sbin/groupadd
/usr/sbin/update-alternatives
/usr/sbin/useradd