Resynch utils and common from common-src and use new FlowDirection fix

Changes

• Resynch with common-src
• Removed unused code
• Removed code that is part of common-src now - especially utils and common
• Also moved to new CPR-based HTTP client in common-src

Fixes reading of FlowDirection from YAML

Common-src MR: oai-cn5g-common-src!58 (merged)

build/scripts/build_helper.pcf

@@ -36,6 +36,7 @@ source $THIS_SCRIPT_PATH/../common-build/installation/build_helper.pistache
 source $THIS_SCRIPT_PATH/../common-build/installation/build_helper.nlohmann
 source $THIS_SCRIPT_PATH/../common-build/installation/build_helper.nghttp2
 source $THIS_SCRIPT_PATH/../common-build/installation/build_helper.yamlcpp
+source $THIS_SCRIPT_PATH/../common-build/installation/build_helper.cpr
 
 #-------------------------------------------------------------------------------
 #arg1 is force (0 or 1) (no interactive script)
@@ -164,6 +165,9 @@ check_install_pcf_deps() {
   install_nghttp2_from_git $1 $2
   ret=$?;[[ $ret -ne 0 ]] && return $ret
 
+  install_cpr_from_git $1 $2
+  ret=$?;[[ $ret -ne 0 ]] && return $ret
+
   # latest usage of yaml-cpp suggests that we should be using 0.7+ version
   # To be sure, let's install from source all the time for the moment
   if [[ $OS_DISTRO == "ubuntu" ]]; then