Append .git submodule repositories, update guide

The submodule path hierarchy needs to support a name used as
hierarchy for lower level repositories or groupIDs AND allow
for a repository at each level eg submodules/appc and
submodules/appc/deployment are both repos. When viewed
in the submodule directory structure in the doc project, a
repository will have .git appended. The above example would
be submodules/appc.git submodules/appc/deployment.git

Change how to guide and convert existing submodule names
Rebased prior change

Change-Id: Ie16b8bbda7562aaaee3c21eb504dc6e293c98cbd
Issue-ID: DOC-33
Signed-off-by: Rich Bennett <rb2745@att.com>
diff --git a/.gitmodules b/.gitmodules
index 50be5f2..146a3c8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,25 +1,25 @@
 [submodule "docs/submodules/vnfrqts/guidelines"]
-	path = docs/submodules/vnfrqts/guidelines
+	path = docs/submodules/vnfrqts/guidelines.git
 	url = ../vnfrqts/guidelines
 	branch = .
 	ignore = dirty
 [submodule "docs/submodules/vnfrqts/requirements"]
-	path = docs/submodules/vnfrqts/requirements
+	path = docs/submodules/vnfrqts/requirements.git
 	url = ../vnfrqts/requirements
 	branch = .
 	ignore = dirty
 [submodule "docs/submodules/appc"]
-	path = docs/submodules/appc
+	path = docs/submodules/appc.git
 	url = ../appc
 	branch = .
 	ignore = dirty
 [submodule "docs/submodules/cli"]
-	path = docs/submodules/cli
+	path = docs/submodules/cli.git
 	url = ../cli
         branch = .
         ignore = dirty
 [submodule "docs/submodules/clamp"]
-	path = docs/submodules/clamp
+	path = docs/submodules/clamp.git
 	url = ../clamp
         branch = .
         ignore = dirty