Ensure dotnetcore runtimes have the right user

Ensure dotnetcore runtimes have the right user

Update maven to 3.6.2 and gradle to 5.6.x on java8 build image

Move pip install into base build image

Update python3.6 build to 3.6.9

Move pip install into base build image

Update python3.6 build to 3.6.9

Move pip install into base build image

Update python3.6 build to 3.6.9

Move pip install into base build image

Update python3.6 build to 3.6.9

Move pip install into base build image

Update python3.6 build to 3.6.9

Move pip install into base build image

Update python3.6 build to 3.6.9

Move pip install into base build image

Update python3.6 build to 3.6.9