Setting a fixed pistache version for xapp-frame-cpp

Change-Id: Ic76e02c5fe9ec4ae7c9e1f838fce951f960a148b
Signed-off-by: czichy <thoralf.czichy@nokia.com>
diff --git a/jjb/shell/install-git-RESTful.sh b/jjb/shell/install-git-RESTful.sh
index 47a1255..a91fb0b 100755
--- a/jjb/shell/install-git-RESTful.sh
+++ b/jjb/shell/install-git-RESTful.sh
@@ -66,6 +66,7 @@
 sudo git clone https://github.com/pistacheio/pistache.git
 
 cd pistache && \
+    sudo git checkout 363629b8804177a1e743cecfb880eed552922729 && \
     sudo meson setup build \
     --buildtype=release \
     -DPISTACHE_USE_SSL=true \