fix(profiles): Drop references to virtual/portage

The old-style virtual/portage is gone and replaced by a new-style
virtual/package-manager in Gentoo. For now just use sys-apps/portage
since that's all we want anyway.

sdk_container/src/third_party/coreos-overlay/profiles/base/packages

@@ -43,7 +43,7 @@
 *sys-apps/gawk
 *sys-apps/grep
 *sys-apps/net-tools
-#*>=sys-apps/portage-2.0.51.22
+*sys-apps/portage
 *sys-process/procps
 *sys-process/psmisc
 *sys-apps/sed
@@ -71,5 +71,4 @@
 *virtual/modutils
 *virtual/os-headers
 *virtual/pager
-*virtual/portage
 *virtual/ssh

sdk_container/src/third_party/coreos-overlay/profiles/default/linux/packages.build

@@ -28,6 +28,7 @@ sys-apps/less
 sys-apps/net-tools
 sys-apps/sed
 sys-apps/texinfo
+sys-apps/portage
 sys-devel/binutils
 sys-devel/bison
 sys-devel/flex
@@ -39,4 +40,3 @@ sys-devel/patch
 virtual/editor
 virtual/libc
 virtual/os-headers
-virtual/portage