Merge pull request #166 from jedwards4b/update_cime_externals

Description of changes

Updates the CMEPS and CDEPS hashes and makes these components optional since they are not needed with the mct driver.
Specific notes

Contributors other than yourself, if any:

Fixes: [Github issue #s] And brief description of each issue.

User interface changes?: [ No/Yes ]
[ If yes, describe what changed, and steps taken to ensure backward compatibility ]

Testing performed (automated tests and/or manual tests):

Externals_cime.cfg

@@ -1,16 +1,16 @@
 [cmeps]
-hash = 471ac52
+hash = 7654038
 protocol = git
 repo_url = https://github.com/ESCOMP/CMEPS.git
 local_path = src/drivers/nuopc/
-required = True
+required = False
 
-[fox]
-hash = 0ed59c1
+[cdeps]
+hash = cfc534
 protocol = git
-repo_url = https://github.com/ESMCI/fox.git
-local_path = src/externals/fox
-required = True
+repo_url = https://github.com/ESCOMP/CDEPS.git
+local_path = src/components/cdeps
+required = False
 
 [externals_description]
 schema_version = 1.0.0