Clean-up - Unnecessary trailing underscores in Python Flask, AIOHttp, BluePlanet (#16249)

* Remove trailing underscore in security_controller_.py and base_model_.py

* Regenerating sample files

* Clean-up files with trailing underscore in samples

* Update security extension to use the new security_controller

* Regenerate unmaintained samples

samples/openapi3/server/petstore/python-flask/git_push.sh

@@ -38,14 +38,14 @@ git add .
 git commit -m "$release_note"
 
 # Sets the new remote
-git_remote=`git remote`
+git_remote=$(git remote)
 if [ "$git_remote" = "" ]; then # git remote not defined
 
     if [ "$GIT_TOKEN" = "" ]; then
         echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
         git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
     else
-        git remote add origin https://${git_user_id}:${GIT_TOKEN}@${git_host}/${git_user_id}/${git_repo_id}.git
+        git remote add origin https://${git_user_id}:"${GIT_TOKEN}"@${git_host}/${git_user_id}/${git_repo_id}.git
     fi
 
 fi
@@ -55,4 +55,3 @@ git pull origin master
 # Pushes (Forces) the changes in the local repository up to the remote repository
 echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
 git push origin master 2>&1 | grep -v 'To https'
-