testsuite: Uncompress most modules

Only keep test-depmod/modules-order-compressed to test compressed module
support.

testsuite/rootfs-pristine/test-depmod/search-order-same-prefix/lib/modules/4.4.4/correct-modules.dep

@@ -1 +1 @@
-foobar/md5.ko.gz:
+foobar/md5.ko:

testsuite/rootfs-pristine/test-depmod/search-order-same-prefix2/lib/modules/4.4.4/correct-modules.dep

@@ -1 +1 @@
-foo/md5.ko.gz:
+foo/md5.ko:

testsuite/rootfs-pristine/test-depmod/search-order-simple/lib/modules/4.4.4/correct-modules.dep

@@ -1 +1 @@
-updates/md5.ko.gz:
+updates/md5.ko:

testsuite/rootfs-pristine/test-modprobe/install-cmd-loop/lib/modules/4.4.4/modules.dep

@@ -1,2 +1,2 @@
-kernel/sound/core/snd.ko.gz:
-kernel/sound/core/snd-pcm.ko.gz: kernel/sound/core/snd.ko.gz
+kernel/sound/core/snd.ko:
+kernel/sound/core/snd-pcm.ko: kernel/sound/core/snd.ko

testsuite/rootfs-pristine/test-modprobe/install-cmd-loop/lib/modules/4.4.4/modules.softdep

@@ -1,2 +1 @@
 # Soft dependencies extracted from modules themselves.
-# Copy, with a .conf extension, to /etc/modprobe.d to use it with modprobe.