added capabilities needed by new sysinit

Docker-DCO-1.1-Signed-off-by: Fernando Mayo <fernando@tutum.co> (github: fermayo)
move history to a job

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Add remount for bind mounts in ro

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #3594 from crosbymichael/add-bind-remount

Add remount for bind mounts in ro
Stop ADD from following symlinks outside the context when passed as the first argument

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)

Docker-DCO-1.1-Signed-off-by: Tianon Gravi <admwiggin@gmail.com> (github: crosbymichael)
Fix "foo: no such file or directory" test failure, and normalize creation of custom error to always depend on if os.IsNotExist(err) so we don't hide other errors that might crop up in these tests

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)

Docker-DCO-1.1-Signed-off-by: Tianon Gravi <admwiggin@gmail.com> (github: crosbymichael)
Add remount for bind mounts in ro

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Use https to get the latest docker version

To avoid unexpected results since docker was using http.
For instance, my broadband doesn't return not found when it's down but
a html page saying that the internet is down. Docker was showing that
html instead of ignoring it.

Fix #3570

Docker-DCO-1.1-Signed-off-by: Fabio Falci <fabiofalci@gmail.com> (github: fabiofalci)

Docker-DCO-1.1-Signed-off-by: Fabio Falci <fabiofalci@gmail.com> (github: crosbymichael)
Add ca-certificates to our package Recommends

It's only in "Recommends" because it's only required for all but the esoteric configurations (since you can't "docker pull" from the index without it, but that's about it).

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)

Docker-DCO-1.1-Signed-off-by: Tianon Gravi <admwiggin@gmail.com> (github: crosbymichael)
Inline the test.docker.io fingerprint in the install.sh script as well

As long as we're doing it, we ought to do it for all the "official" Docker properties at least

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)

Docker-DCO-1.1-Signed-off-by: Tianon Gravi <admwiggin@gmail.com> (github: crosbymichael)
Add more specific lvm2 version to PACKAGERS document

I personally tested this using our container, and this was the lowest version that compiles and runs properly.

Docker-DCO-1.0-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)

Docker-DCO-1.1-Signed-off-by: Tianon Gravi <admwiggin@gmail.com> (github: crosbymichael)
Bump to version v0.7.6

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #3508 from tutumcloud/seccomp

Add capabilities needed by new sysinit to mkseccomp.pl sample list
Add RWMutex lock into TruncIndex to fix race condition when inserting values

The idx.index array is overwritten when a new value is inserted to the index.
When two containers are created concurrently, their ids are inserted to the
index and one can overwrite the other leaving one of ids missing from the
index. Adding a RWMutex lock around read/write operations fixes this.

Docker-DCO-1.1-Signed-off-by: James Allen <jamesallen0108@gmail.com> (github: jpallen)
Merge pull request #3597 from crosbymichael/bump_v0.7.6

Bump to version v0.7.6
Merge branch 'release' into merge_release_v0.7.6

Conflicts:
	VERSION
	hack/make/ubuntu

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #3608 from crosbymichael/merge_release_v0.7.6

Merge release v0.7.6 to master
fix tests & small code improvment

Docker-DCO-1.1-Signed-off-by: Victor Vieux <victor.vieux@docker.com> (github: vieux)
Merge pull request #3582 from vieux/history_job

move history to a job
Merge pull request #3606 from jpallen/1319-fix-race-condition-in-truncindex

Add RWMutex lock into TruncIndex to fix race condition when inserting values