Import latest app updates from streamline

An updated set of source files and initialization was provided by streamline to
address issues observed during initial testing. These files have been updated in
order to generate a new set of app images.

docker/streamline-src/vendor/knplabs/knp-snappy/appveyor.yml

@@ -1,53 +0,0 @@
-build: false
-platform: x64
-clone_folder:  c:\projects\snappy
-
-environment:
-  matrix:
-    - dependencies: lowest
-      php_ver_target: 7.1
-    - dependencies: current
-      php_ver_target: 7.2
-    - dependencies: highest
-      php_ver_target: 7.3
-
-cache:
-  - composer.phar
-  - c:\ProgramData\chocolatey\bin -> appveyor.yml
-  - c:\ProgramData\chocolatey\lib -> appveyor.yml
-  - c:\php -> appveyor.yml
-
-init:
-  - SET PATH=c:\Program Files\OpenSSL;c:\tools\php;%PATH%
-  - SET COMPOSER_NO_INTERACTION=1
-  - SET PHP=1
-  - SET ANSICON=121x90 (121x90)
-
-install:
-  - IF EXIST c:\tools\php (SET PHP=0)
-  - ps: Set-Service wuauserv -StartupType Manual
-  # In order to be able to list all the avialable PHP packages we have to
-  # downgrade Chocolatey to version 0.10.13.
-  # See https://github.com/chocolatey/choco/issues/1843
-  - ps: choco install chocolatey -y --version 0.10.13 --allow-downgrade --force
-  - ps: choco search php --exact --all-versions -r
-  - ps: echo ((choco search php --exact --all-versions -r | select-string -pattern $env:php_ver_target | sort { [version]($_ -split '\|' | select -last 1) } -Descending | Select-Object -first 1) -replace '[php|]','')
-  - ps: appveyor-retry cinst php --params '""/InstallDir:c:\tools\php""' --ignore-checksums -y --force --version ((choco search php --exact --all-versions -r | select-string -pattern $env:php_ver_target | sort { [version]($_ -split '\|' | select -last 1) } -Descending | Select-Object -first 1) -replace '[php|]','')
-  - cd c:\tools\php
-  - IF %PHP%==1 copy php.ini-production php.ini /Y
-  - IF %PHP%==1 echo date.timezone="UTC" >> php.ini
-  - IF %PHP%==1 echo extension_dir=ext >> php.ini
-  - IF %PHP%==1 echo extension=php_openssl.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_mbstring.dll >> php.ini
-  - IF %PHP%==1 echo extension=php_fileinfo.dll >> php.ini
-  - IF %PHP%==1 echo @php %%~dp0composer.phar %%* > composer.bat
-  - appveyor-retry appveyor DownloadFile https://getcomposer.org/composer.phar
-  - cd c:\projects\snappy
-  - IF %dependencies%==lowest appveyor-retry composer update --prefer-lowest --no-progress --profile -n
-  - IF %dependencies%==current appveyor-retry composer install --no-progress --profile
-  - IF %dependencies%==highest appveyor-retry composer update --no-progress --profile -n
-  - composer show
-
-test_script:
-  - cd c:\projects\snappy
-  - vendor/bin/phpunit