asn1c: use better version of asn1c

We don't work much on asn1c. The version we use has several bugs.
There is an active community out there that fixes bugs and improves
asn1c. Let's use their version.

cmake_targets/tools/build_helper

@@ -677,14 +677,12 @@ install_asn1c_from_source(){
     asn1_install_log=$OPENAIR_DIR/cmake_targets/log/asn1c_install_log.txt
     echo_info "\nInstalling ASN1. The log file for ASN1 installation is here: $asn1_install_log "
     (
+    $SUDO $INSTALLER -y install bison flex
     $SUDO rm -rf /tmp/asn1c
     # GIT_SSL_NO_VERIFY=true git clone https://gitlab.eurecom.fr/oai/asn1c.git /tmp/asn1c
-    git clone https://gitlab.eurecom.fr/oai/asn1c.git /tmp/asn1c
+    git clone https://github.com/mouse07410/asn1c /tmp/asn1c
     cd /tmp/asn1c
-    # better to use a given commit than a branch in case the branch
-    # is updated and requires modifications in the source of OAI
-    #git checkout velichkov_s1ap_plus_option_group
-    git checkout f12568d617dbf48497588f8e227d70388fa217c9
+    git checkout vlm_master
     autoreconf -iv
     ./configure
     make -j`nproc`