.gitignore: Ignore some more common output files

* Log files created by ginkgo runs
* The .build_all file that 'make -C bpf build_all' generates
* GDB debugging history

Also move the bpf tests gitignore by the other test bits.

Signed-off-by: Joe Stringer <joe@cilium.io>

.gitignore

@@ -49,6 +49,7 @@ outgoing
 *cscope.in.out
 *cscope.po.out
 *tags
+.gdb_history
 
 man/
 
@@ -58,14 +59,15 @@ test/*_manifest.yaml
 test/*_policy.json
 test/*.xml
 test/.vagrant
+test/*.log
+test/bpf/_results
 
 # Emacs backup files
 *~
 
 # Temporary files that allow build containers/VMs work without git
 GIT_VERSION
 
-test/bpf/_results
-
 # generated from make targets
 *.ok
+*.build_all