MDEV-14918: Use sst_dump from package rocksdb-tools, don't build it

Since this tool is already shipped in the system, don't provide it from
MariaDB from 10.5 series onwards. It will potentially just create an
installation failure due to conflict if users install rocksdb-tools.

Package rocksdb-tools in Debian since Buster (10):
https://packages.debian.org/search?suite=buster&arch=any&mode=path&searchon=contents&keywords=sst_dump

Package rocksdb-tools in Ubuntu since Disco (19.04):
https://packages.ubuntu.com/search?suite=disco&arch=any&mode=exactfilename&searchon=contents&keywords=sst_dump

This change is adopted from Debian the change has been since Dec 18, 2018.
https://salsa.debian.org/mariadb-team/mariadb-10.3/-/commit/d50e2eaf1fad46c494bd0f090b0e75c19ac3f41a

debian/autobake-deb.sh

@@ -73,13 +73,23 @@ then
 fi
 
 # If libzstd-dev is not available (before Debian Stretch and Ubuntu Xenial)
-# remove the dependency from server and rocksdb so it can build properly
+# remove the dependency from server and RocksDB so it can build properly
 if ! apt-cache madison libzstd-dev | grep 'libzstd-dev' >/dev/null 2>&1
 then
   sed '/libzstd-dev/d' -i debian/control
   sed '/libzstd1/d' -i debian/control
 fi
 
+# If rocksdb-tools is not available (before Debian Buster and Ubuntu Disco)
+# remove the dependency from the RocksDB plugin so it can install properly
+# and instead ship the one built from MariaDB sources
+if ! apt-cache madison rocksdb-tools | grep 'rocksdb-tools' >/dev/null 2>&1
+then
+  sed '/rocksdb-tools/d' -i debian/control
+  sed '/sst_dump/d' -i debian/not-installed
+  echo "usr/bin/sst_dump" >> debian/mariadb-plugin-rocksdb.install
+fi
+
 # The binaries should be fully hardened by default. However TokuDB compilation seems to fail on
 # Debian Jessie and older and on Ubuntu Xenial and older with the following error message:
 #   /usr/bin/ld.bfd.real: /tmp/ccOIwjFo.ltrans0.ltrans.o: relocation R_X86_64_PC32 against symbol

debian/control

@@ -584,6 +584,7 @@ Description: Connect storage engine for MariaDB
 Package: mariadb-plugin-rocksdb
 Architecture: amd64 arm64 mips64el ppc64el
 Depends: mariadb-server-10.5 (= ${binary:Version}),
+         rocksdb-tools,
          ${misc:Depends},
          ${shlibs:Depends}
 Breaks: mariadb-rocksdb-engine-10.2,

debian/mariadb-plugin-rocksdb.install

 etc/mysql/conf.d/rocksdb.cnf etc/mysql/mariadb.conf.d
 usr/bin/myrocks_hotbackup
 usr/bin/mysql_ldb
-usr/bin/sst_dump
 usr/lib/mysql/plugin/ha_rocksdb.so
 usr/share/man/man1/mariadb-ldb.1
 usr/share/man/man1/mysql_ldb.1

debian/not-installed

@@ -3,6 +3,7 @@ lib/systemd/system/mariadb@.service # Installed by rules file
 usr/bin/mysql_config # We already have the MariaDB variant
 usr/bin/mysql_embedded # Huge 500 MB file. Not intended for distribution via any disto package.
 usr/bin/mytop # Mytop is distributed from a separate source package
+usr/bin/sst_dump # Use the one from rocksdb-tools package
 usr/lib/sysusers.d/sysusers.conf
 usr/lib/tmpfiles.d/tmpfiles.conf
 usr/lib/mysql/plugin/JavaWrappers.jar # These are only built if JNI/libjawt.so is installed from e.g. openjdk-8-jre-headless