run-postinsts: simplify the logic of whether to install it to images

The logic is scattered all over the place, but amounts to
"install, unless the rootfs is read only". Let's express that directly.

(From OE-Core rev: 697804229a172125ce7d3bfc9b343812d6fe3240)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/classes/image.bbclass

@@ -29,7 +29,7 @@ IMAGE_FEATURES[validitems] += "debug-tweaks read-only-rootfs empty-root-password
 IMAGE_GEN_DEBUGFS ?= "0"
 
 # rootfs bootstrap install
-ROOTFS_BOOTSTRAP_INSTALL = "${@bb.utils.contains("IMAGE_FEATURES", "package-management", "", "${ROOTFS_PKGMANAGE_BOOTSTRAP}",d)}"
+ROOTFS_BOOTSTRAP_INSTALL = "run-postinsts"
 
 # These packages will be removed from a read-only rootfs after all other
 # packages have been installed

meta/classes/rootfs_deb.bbclass

@@ -3,7 +3,6 @@
 #
 
 ROOTFS_PKGMANAGE = "dpkg apt"
-ROOTFS_PKGMANAGE_BOOTSTRAP  = "run-postinsts"
 
 do_rootfs[depends] += "dpkg-native:do_populate_sysroot apt-native:do_populate_sysroot"
 do_populate_sdk[depends] += "dpkg-native:do_populate_sysroot apt-native:do_populate_sysroot bzip2-native:do_populate_sysroot"

meta/classes/rootfs_ipk.bbclass

@@ -7,7 +7,6 @@
 
 EXTRAOPKGCONFIG ?= ""
 ROOTFS_PKGMANAGE = "opkg ${EXTRAOPKGCONFIG}"
-ROOTFS_PKGMANAGE_BOOTSTRAP  = "run-postinsts"
 
 do_rootfs[depends] += "opkg-native:do_populate_sysroot opkg-utils-native:do_populate_sysroot"
 do_populate_sdk[depends] += "opkg-native:do_populate_sysroot opkg-utils-native:do_populate_sysroot"

meta/classes/rootfs_rpm.bbclass

@@ -3,7 +3,6 @@
 #
 
 ROOTFS_PKGMANAGE = "rpm dnf"
-ROOTFS_PKGMANAGE_BOOTSTRAP = "run-postinsts"
 
 # dnf is using our custom distutils, and so will fail without these
 export STAGING_INCDIR