The system is often willing to clear cached data to make room for
incoming installs, so use StorageManager.getAllocatableBytes() when
making "does it fit?" style decisions.
Add new INSTALL_ALLOCATE_AGGRESSIVE flag, which will flow through
to use StorageManager.FLAG_ALLOCATE_AGGRESSIVE when making allocation
related requests. (This can be used by installers to indicate
packages that are critical to system health or security.
Test: runtest -x frameworks/base/core/tests/coretests/src/android/content/pm/PackageHelperTests.java
Bug: 36131437
Change-Id: If8118762fd1ca1f497d2cdd1787bdb3c9759dcc0
683bcd30ef