[Docker] added procps package

Signed-off-by: Mohammed Ismail <mohammed.ismail@openairinterface.org>

docker/Dockerfile.smf.rhel8.2

@@ -77,6 +77,7 @@ ENV TZ=Europe/Paris
 RUN yum update -y && \
     yum install -y --enablerepo="ubi-8-codeready-builder" \
     psmisc \
+    procps-ng \
     net-tools \
     libevent && \
     rm -rf /var/lib/apt/lists/*