Our package-installs script fails when installing a package which does
not have a pkg-map but a pkg-map file exist for the element.
Change-Id: I3dab802e23bccfc916efcc1c70c6ce6c4a9ccf67
Packages are often also installed in both the pre-install.d and
post-install.d phases. This patch expands the package-installs element
to support declarative package support for these phases in addition to
the existing support for install.d. The actual install/uninstall logic
is moved to common scripts under bin/ so that it can be reused across
the different phases.
Change-Id: Id51d0bbad232737fc8b5ffaf016dec50cd5b66c9
