[SIMB-1827] easycwmp: minor easycwmp action script fixes

[SIMB-1827] easycwmp: minor easycwmp action script fixes

Fix typos and intentation in the main easycwmp action script for openwrt.

Note: might be fixing a real bug on batch /etc/config updates via TR-069
firmware upload.

Upstream-report: http://support.easycwmp.org/view.php?id=303