[PATCH] test-container: Install with $(all-subdirs) [BZ #24794]

[DJ Delorie]

Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> writes:
> Whenever a sub-make is created, it inherits the variable subdirs from its
> parent.  This is also true when make check is called with a restricted
> list of subdirs.  In this scenario, make install is executed "partially"
> and testroot.pristine ends up with an incomplete installation.

"obvious in retrospect"  Sigh.

> 2019-07-22  Tulio Magno Quites Machado Filho  <tuliom@linux.ibm.com>
>
> 	[BZ #24794]
> 	* Makefile (testroot.pristine/install.stamp): Pass
> 	subdirs='$(all-subdirs)' to make install.

LGTM.  Thanks!

Reviewed-by: DJ Delorie <dj@redhat.com>