With these changes, user can now specify how debian packages will be built in regards to the presence of symbols and compiler-optimizations. I'm simply relying on DEB_BUILD_OPTIONS flags as indicated here: https://www.debian.org/doc/debian-policy/#debian-rules-and-deb-build-options

By default we will continue to build packages as is the case today.

Example after compilation with debugging OFF
============================================

rmolina@server04:~/wsp_gitli_Apr_30_2018/sonic-buildimage$ #find src/ -type f -executable -exec file '{}' \; | egrep "executable,.* stripped" > ~/executable_stripped_files_before.txt

rmolina@server04:~/wsp_gitli_Jun_2_2018/sonic-buildimage$ egrep "src\/sonic-*" ~/executable_stripped_files_before.txt | egrep ", stripped"
src/sonic-swss/debian/swss/usr/bin/swssconfig: ELF 64-bit LSB  executable, x86-64, version 1 (GNU/Linux), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=38a4858d3c9c479e89b0ec4a4d8acbf6f19795c7, stripped
src/sonic-swss/debian/swss/usr/bin/orchagent: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=33c611d547817f786942685f8495654b680cfe66, stripped
src/sonic-swss/debian/swss/usr/bin/teamsyncd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=696f44f38f3c2e7acd88acdc51220f210c72ae99, stripped
src/sonic-swss/debian/swss/usr/bin/neighsyncd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=d9bf4097548830a795488db9dbe26dbf4f0e194b, stripped
src/sonic-swss/debian/swss/usr/bin/intfmgrd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=09ef06341bc7748d62ad926479373726a191acf0, stripped
src/sonic-swss/debian/swss/usr/bin/swssplayer: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=685c29e90bf4a080ca104da3f11ee4bc8e21dbc1, stripped
src/sonic-swss/debian/swss/usr/bin/portsyncd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=5089a919e03fb842e10e23ef4be77d4add215e32, stripped
src/sonic-swss/debian/swss/usr/bin/fpmsyncd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=4cb4cdebda61921c3367584e965bb5d230466b42, stripped
src/sonic-swss/debian/swss/usr/bin/routeresync: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=5a161cfa375e0bba789068e7c661e160b18b8615, stripped
src/sonic-swss/debian/swss/usr/bin/vlanmgrd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=a4c0b8b6ee8984da6827aa15fc305257ca868326, stripped
src/sonic-swss/debian/swss/usr/bin/buffermgrd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=607d8d2cef930ccf89d649c895000c09dda59139, stripped
src/sonic-swss/debian/swss/usr/bin/intfsyncd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=08d323095731fdae0667dd9b155090ecf8ef4804, stripped
src/sonic-linux-kernel/linux-3.16.51/debian/build/build_amd64_none_amd64/arch/x86/boot/compressed/vmlinux.bin: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=613f30030d61a0b7e46f6631c76489533ffe5d81, stripped
src/sonic-sairedis/debian/syncd-rpc/usr/bin/syncd: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=05b889a134292f7f200352ec90742c72414c880a, stripped
src/sonic-sairedis/debian/syncd-rpc/usr/bin/syncd_request_shutdown: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=aa6dd0376c90c8c9fd4da8ba55c464d0bae4e102, stripped
src/sonic-sairedis/debian/syncd-rpc/usr/bin/saiplayer: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=174554fd3857460d09e3207d65b792f786367c93, stripped
src/sonic-sairedis/debian/syncd-rpc/usr/bin/saidump: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=36588b3870e7b579fba99101433c397a8f32cd9f, stripped
src/sonic-sairedis/debian/syncd-rpc/usr/bin/saisdkdump: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=4eaa3369298343a69729228f7aa81a1b6e9c2843, stripped
src/sonic-swss-common/debian/libswsscommon/usr/bin/swssloglevel: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.32, BuildID[sha1]=82aeca06ad2c54384fd98ce79c6c98d12f7bfec9, stripped

Example after compilation with debugging ON
============================================

rmolina@server04:~/wsp_gitli_Jun_2_2018/sonic-buildimage$ find src/ -type f -executable -exec file '{}' \; | egrep "executable,.* stripped" > ~/executable_stripped_files_after.txt

rmolina@server04:~/wsp_gitli_Jun_2_2018/sonic-buildimage$ egrep "src\/sonic-*" ~/executable_stripped_files_after.txt | egrep ", stripped"
src/sonic-linux-kernel/linux-3.16.51/debian/build/build_amd64_none_amd64/arch/x86/boot/compressed/vmlinux.bin: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), statically linked,

Just to double-check, I went ahead and activated the new SONIC_INSTALL_DEBUG_TOOLS option (which replaces old SONIC_CONFIG_DEBUG one), and built a new image to verify that everything is working fine (debugging tools are being added to all dockers).