Add GEOS-IT option for remap restarts

[biljanaorescanin]

Added remapping from GEOS-IT restarts.
GEOS-IT has only two dates available for users to be remapped, day 14th and day 28th, and they are in .tar format.

This PR will address these two issues:
#62
#72

PR was tested for a run using the on-screen option for GEOS-IT vs. copying and un-tar files manually and using the tool to remap my restarts. The difference is zero diff.

[mathomp4]

Well that was a lot more than I was expecting for this! Great job!

[biljanaorescanin]

PR was tested for diff input source restarts; M2, GEOS-IT and user owned restarts remapping.
PR was also tested with automated tests on SLES12 and that is zero diff as well.

@weiyuan-jiang I've added agcm rst remap since I didn't want to confuse users if we didn't do that with GEOS-IT, this way it is same principal as M2 handling.

[weiyuan-jiang]

PR was tested for diff input source restarts; M2, GEOS-IT and user owned restarts remapping. PR was also tested with automated tests on SLES12 and that is zero diff as well.

@weiyuan-jiang I've added agcm rst remap since I didn't want to confuse users if we didn't do that with GEOS-IT, this way it is same principal as M2 handling.

The problem is if the users answer No to remap agcm_import _rst, it will be copied and remapped anyway.

[biljanaorescanin]

PR was tested for diff input source restarts; M2, GEOS-IT and user owned restarts remapping. PR was also tested with automated tests on SLES12 and that is zero diff as well.
@weiyuan-jiang I've added agcm rst remap since I didn't want to confuse users if we didn't do that with GEOS-IT, this way it is same principal as M2 handling.

The problem is if the users answer No to remap agcm_import _rst, it will be copied and remapped anyway.

Good catch, I've fixed it.

[biljanaorescanin]

I've found trying out different dates loop was not good. I was testing just with resent dates. Now it works from 2007 01.

[biljanaorescanin]

@weiyuan-jiang testing case c24Toc12 will fail since we now set false for default for agcm_import_rst remapping. It was just that base case did have that remapped and current doesn't so file count comparison fails.

But we could just remove that restarts from base? Or change default ?

All other testing was ok. I didn't find any more issues.

[gmao-rreichle]

cc @gmao-rreichle

[biljanaorescanin]

I've repeated testing all look fine for my cases and automated tests. I suppose it is ready for you @sdrabenh

Also everyone is welcome to try cases they use most often I just test for some of the options I can't always test it all.