Add libssh2-devel package for gpfdist new feature

libssh2-devel is introduced as a dependency package for the new feature
in the PR apache/cloudberry#1226.

Author: tuhaihe

images/docker/cbdb/build/rocky8/Dockerfile

@@ -76,6 +76,7 @@ RUN dnf makecache && \
     dnf makecache && \
     dnf config-manager --disable epel && \
     dnf install -y -d0 --enablerepo=epel \
+        libssh2-devel \
         the_silver_searcher \
         htop && \
     dnf install -y -d0 \

images/docker/cbdb/build/rocky9/Dockerfile

@@ -77,6 +77,7 @@ RUN dnf makecache && \
     dnf makecache && \
     dnf config-manager --disable epel && \
     dnf install -y --enablerepo=epel \
+        libssh2-devel \
         the_silver_searcher \
         bat \
         htop && \