work around a bug in bash3, now tested with dash, bash, busybox

cdist/conf/type/__key_value/gencode-remote

@@ -80,30 +80,27 @@ case "$state_should" in
 esac
 
 cat <<__CDIST_HEREDOC_END_HERE_MARKER
-export state="\$(cat <<"__CDIST_INPUT_END_HERE_MARKER"
+IFS='\n' read -r state <<'__CDIST_INPUT_END_HERE_MARKER'
 $state_should
 __CDIST_INPUT_END_HERE_MARKER
-)"
+export state
-export key="\$(cat <<"__CDIST_INPUT_END_HERE_MARKER"
+IFS='\n' read -r key <<'__CDIST_INPUT_END_HERE_MARKER'
 $key
 __CDIST_INPUT_END_HERE_MARKER
-)"
+export key
-export value="\$(cat <<"__CDIST_INPUT_END_HERE_MARKER"
+IFS='\n' read -r value <<'__CDIST_INPUT_END_HERE_MARKER'
 $(cat "$__object/parameter/value")
 __CDIST_INPUT_END_HERE_MARKER
-)"
+export value
-export delimiter="\$(cat <<"__CDIST_INPUT_END_HERE_MARKER"
+IFS='\n' read -r delimiter <<'__CDIST_INPUT_END_HERE_MARKER'
 $(cat "$__object/parameter/delimiter")
 __CDIST_INPUT_END_HERE_MARKER
-)"
+export delimiter
-export exact_delimiter="\$(cat <<"__CDIST_INPUT_END_HERE_MARKER"
+IFS='\n' read -r comment <<'__CDIST_INPUT_END_HERE_MARKER'
-$exact_delimiter
-__CDIST_INPUT_END_HERE_MARKER
-)"
-export comment="\$(cat <<"__CDIST_INPUT_END_HERE_MARKER"
 $(cat "$__object/parameter/comment")
 __CDIST_INPUT_END_HERE_MARKER
-)"
+export comment
+export exact_delimiter="$exact_delimiter"
 
 tmpfile=\$(mktemp "${file}.cdist.XXXXXXXXXX")
 # preserve ownership and permissions by copying existing file over tmpfile