Add E2 SM in the target dockerfiles to use e2 agent in container deployment

- Update builder dockerfiles to build Flexric for E2 SM
- Update target dockerfiles to copy E2 SM

docker/Dockerfile.gNB.aw2s.rhel9

@@ -76,6 +76,9 @@ COPY --from=gnb-base \
     /lib64/libforms.so.2 \
     /lib64/
 
+## Copy E2 SM models
+COPY --from=gnb-build /usr/local/lib64/flexric /usr/local/lib64/flexric
+
 RUN ln -s /usr/local/lib/libaw2sori_transpro.so /usr/local/lib/libthirdparty_transpro.so && \
     ln -s /usr/local/lib/liboai_eth_transpro.so /usr/local/lib/liboai_transpro.so && \
     ldconfig && \