Adjust ansible-role-requirements-editor file open options

This implements more correct file open options. While this is
not strictly required it does appear to make the script behave
more consistently across different platforms.

The patch also renames the file name and related content to
ensure that the tool is correctly spelled.

Change-Id: Idde0141691e1008bead802bd6f3759c12e37b02b

scripts/ansible-role-requirements-editor.py

@@ -47,7 +47,7 @@ def main():
 
     # Setup argument parsing
     parser = argparse.ArgumentParser(
-        description='ansible-role-requirements.yml CLI editer',
+        description='ansible-role-requirements.yml CLI editor',
         epilog='Licensed "Apache 2.0"')
 
     parser.add_argument(
@@ -82,7 +82,7 @@ def main():
     args = parser.parse_args()
 
     # Read the ansible-role-requirements.yml file into memory
-    with open(args.file, "r+") as role_req_file:
+    with open(args.file, "r") as role_req_file:
         reqs = yaml.safe_load(role_req_file)
 
     # Loop through the list to find the applicable role
@@ -94,7 +94,7 @@ def main():
                 role_data['src'] = args.src
 
     # Write out the resulting file
-    with open(args.file, "r+") as role_req_file:
+    with open(args.file, "w") as role_req_file:
         try:
             yaml.dump(reqs, role_req_file, default_flow_style=False)
         except yaml.YAMLError as exc:

scripts/sources-branch-updater.sh

@@ -212,7 +212,7 @@ if [[ "${OSA_BRANCH}" != "master" ]]; then
     fi
 
     # Now use the information we have to update the ansible-role-requirements file
-    $(dirname ${0})/ansible-role-requirements-editer.py -f ansible-role-requirements.yml -n "${role_name}" -v "${role_version}"
+    $(dirname ${0})/ansible-role-requirements-editor.py -f ansible-role-requirements.yml -n "${role_name}" -v "${role_version}"
   done
   echo "Completed updating ansible-role-requirements.yml"
 else