Ergo deployment OS and existing installation check.

Signed-off-by: Georg Pfuetzenreuter <georg@lysergic.dev>

scripts/sh/deploy_ergo.sh

@@ -1,4 +1,11 @@
 #!/bin/sh
+DISTRIB=$(awk -F= '/^NAME/{print $2}' /etc/os-release)
+echo "Detected $DISTRIB"
+if [[ ${DISTRIB} = "openSUSE Leap" ]]
+echo
+then
+if [ ! /opt/ergo ]
+then
 GOVER=`go version | { read _ _ v _; echo ${v#go}; }`
 echo "Detected Go $GOVER"
 GOVER_REQ="1.16.0"
@@ -53,3 +60,9 @@ fi
 else
 echo "This is currently only compatible with Go 1.16.6 or higher. Consider deploy_go.sh."
 fi
+else
+echo "Existing Ergo installation or leftovers detected. Consider remove_ergo.sh."
+fi
+else
+echo "This is currently only compatible with SUSE Leap nodes."
+fi