Changed to use 'source secrets_dict.py'

The previous version stopped working after many months, first detected by @carrollsa   
This is cleaner anyway.

Author: c-simpson

src/server/bin/export_secrets.sh

@@ -1,7 +1,3 @@
 set -o allexport
- while read k _ v; 
-    do 
-      eval $k=$v;
-      export k;
-    done < 'secrets_dict.py'
- set +o allexport
+source secrets_dict.py
+set +o allexport