ci: add CentOS 8 support; drop CentOS 7

Refs: #5040, #5087
Change-Id: I8a52e02801b8e313d1a7531228616526b0f3cc94
diff --git a/.jenkins.d/00-deps.sh b/.jenkins.d/00-deps.sh
index 633c56f..742fa8b 100755
--- a/.jenkins.d/00-deps.sh
+++ b/.jenkins.d/00-deps.sh
@@ -33,17 +33,9 @@
         sudo apt-get -qy install gcovr lcov libgd-perl
     fi
 
-elif has CentOS-7 $NODE_LABELS; then
-    sudo yum -y install yum-utils pkgconfig \
-                        openssl-devel libtranslit-icu \
-                        python-devel sqlite-devel \
-                        libpcap-devel systemd-devel \
-                        devtoolset-7-libasan-devel \
-                        devtoolset-7-liblsan-devel
-    sudo yum -y groupinstall 'Development Tools'
-
-    svn checkout https://github.com/cmscaltech/sandie-ndn/trunk/packaging/RPMS/x86_64/boost1_58_0
-    pushd boost1_58_0 >/dev/null
-    sudo rpm -Uv --replacepkgs --replacefiles boost-devel* boost-license* libboost_*
-    popd >/dev/null
+elif has CentOS-8 $NODE_LABELS; then
+    sudo dnf config-manager --enable PowerTools
+    sudo dnf -y install gcc-c++ libasan pkgconf-pkg-config python3 \
+                        boost-devel openssl-devel sqlite-devel \
+                        libpcap-devel systemd-devel
 fi