ceph.spec.in: add gcc-toolset-11-annobin-plugin-gcc

ceph.spec.in: add gcc-toolset-11-annobin-plugin-gcc

gcc-toolset-11-annobin is already installed, but ceph.spec.in adds
"-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1" which needs the gcc
plugin too

resolves this failure during the cmake configure step:

-- Check for working CXX compiler: /opt/rh/gcc-toolset-11/root/usr/bin/c++
-- Check for working CXX compiler: /opt/rh/gcc-toolset-11/root/usr/bin/c++ - broken
CMake Error at /usr/share/cmake/Modules/CMakeTestCXXCompiler.cmake:59 (message):
  The C++ compiler

    "/opt/rh/gcc-toolset-11/root/usr/bin/c++"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /home/jenkins-build/build/workspace/ceph-dev-new-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos8/DIST/centos8/MACHINE_SIZE/gigantic/release/17.0.0-11497-gfae772b8/rpm/el8/BUILD/ceph-17.0.0-11497-gfae772b8/x86_64-redhat-linux-gnu/CMakeFiles/CMakeTmp

    Run Build Command(s):/usr/bin/gmake -f Makefile cmTC_09421/fast && /usr/bin/gmake  -f CMakeFiles/cmTC_09421.dir/build.make CMakeFiles/cmTC_09421.dir/build
    gmake[1]: Entering directory '/home/jenkins-build/build/workspace/ceph-dev-new-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos8/DIST/centos8/MACHINE_SIZE/gigantic/release/17.0.0-11497-gfae772b8/rpm/el8/BUILD/ceph-17.0.0-11497-gfae772b8/x86_64-redhat-linux-gnu/CMakeFiles/CMakeTmp'
    Building CXX object CMakeFiles/cmTC_09421.dir/testCXXCompiler.cxx.o
    /opt/rh/gcc-toolset-11/root/usr/bin/c++   -O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fexceptions -fstack-protector-strong -grecord-gcc-switches -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection  -o CMakeFiles/cmTC_09421.dir/testCXXCompiler.cxx.o -c /home/jenkins-build/build/workspace/ceph-dev-new-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos8/DIST/centos8/MACHINE_SIZE/gigantic/release/17.0.0-11497-gfae772b8/rpm/el8/BUILD/ceph-17.0.0-11497-gfae772b8/x86_64-redhat-linux-gnu/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    cc1plus: fatal error: inaccessible plugin file plugin/annobin.so expanded from short plugin name annobin: No such file or directory
    compilation terminated.

Signed-off-by: Casey Bodley <cbodley@redhat.com>
(cherry picked from commit 46a1aa48748e0ee7d41a74cad1bc1e611524fe02)