Bugfix in create_instance.sh and install/loader.py

Allows runtest to run again =)

install/loader.py

     if not os.path.isdir(LODEL2_LIB_ABS_PATH):
         print("FATAL ERROR : the LODEL2_LIB_ABS_PATH variable in loader.py is \
 not correct : '%s'" % LODEL2_LIB_ABS_PATH, file=sys.stderr)
-    sys.path.append(os.path.dirname(LODEL2_LIB_ABS_PATH))
+    sys.path.append(LODEL2_LIB_ABS_PATH)
 
 try:
     import lodel

scripts/create_instance.sh

 instdir="$2"
 
 
-libdir=$(realpath $(dirname $0))
+libdir=$(realpath $(dirname $0)/../)
 install_tpl="$3"
 install_tpl="${install_tpl:=$libdir/install}"
 em_file="$4"