Add support for building ubuntu22.04 on amd64

1. In ubuntu22.04 header file "rpc.h" is no longer stored in "/rpc"
    directory. So we use flag WITH_TIRPC to succesfully build.
2. In ubuntu22.04 docker image we install "libeld-dev" package so we
    don`t need to build the library. That is why we use WITH_LIBELF
    flag.

Signed-off-by: Dmitrii Chervov <dschervov1@yandex.ru>

Author: dschervov

mk/docker.mk

@@ -34,7 +34,7 @@ REVISION 	 ?= $(shell git rev-parse HEAD)
 include $(CURDIR)/versions.mk
 
 # Supported OSs by architecture
-AMD64_TARGETS := ubuntu20.04 ubuntu18.04 ubuntu16.04 debian10 debian9
+AMD64_TARGETS := ubuntu22.04 ubuntu20.04 ubuntu18.04 ubuntu16.04 debian10 debian9
 X86_64_TARGETS := centos7 centos8 rhel7 rhel8 amazonlinux2 opensuse-leap15.1
 PPC64LE_TARGETS := ubuntu18.04 ubuntu16.04 centos7 centos8 rhel7 rhel8
 ARM64_TARGETS := ubuntu18.04
@@ -125,6 +125,10 @@ docker-amd64-verify: $(patsubst %, %-verify, $(AMD64_TARGETS)) \
 --debian%: OS := debian
 --amazonlinux%: OS := amazonlinux
 
+# private ubuntu target with overrides
+--ubuntu22.04%: WITH_TIRPC = yes
+--ubuntu22.04%: WITH_LIBELF = yes
+
 # private centos target with overrides
 --centos%: OS := centos
 --centos%: WITH_TIRPC = yes