Merge pull request !78 from DCCooper/master

Bump version to 0.9.3, changes including

Bugfix:
- fix goroutine leak because of Status channels waiting
- fix goroutine leaks because status channel not closed
- fix --from can not pull image from remote registry
- correct file mode to 0644
- fix build-arg can not be properly read
- fix parse on ${A}
- fix frontend hangs when build/save failed
- return error code when rm image failed

Enancement:
- build with tmp dir
- disable golang compiling optimization in "make debug"
- add build output to avoid mock daemon return endless value
- disable config path setting by users
- refactor login function
- test remove images after building and add isulad output
- refactor save relative function
- reject static build request with the same Dockerfile in building
- enhancement of unit_test check
- wait all builder goroutine when stop daemon
- change the default authentication method
- refactor test-integration
- add go test for image load
- add gofuzz test
- refactor cli and daemon build
- refactor exporter
- add close status chan for backend
- add CleanContainer and lock for store

Feature:
- add linux capability for run command
- support specifying image in images command
- support remove by image name

Document:
- update config file setting
Signed-off-by: NDCCooper <1866858@gmail.com>

Merge pull request !74 from jingxiaolu/rm_error_code

Return error code when rm image failed

Fixes: #I1U94W
Signed-off-by: NLu Jingxiao <lujingxiao@huawei.com>

Merge pull request !73 from zklei/fix-hang

Merge pull request !72 from holyfei/master

fix #I1TUTU

reason:fix frontend hangs when build/save failed
Signed-off-by: Nleizhongkai <leizhongkai@huawei.com>

Fix #I1TUG8

reason:
1. add lock for store
2. add CleanContainer function, concurrent call of it will be
under the protection of lock
Signed-off-by: Nyangfeiyu <yangfeiyu2@huawei.com>

Merge pull request !71 from holyfei/master

Fix #I1TOQY

reason: 
1. add close status chan for backend
2. use closeStatusChan instead of directly closing
Signed-off-by: Nyangfeiyu <yangfeiyu2@huawei.com>

Merge pull request !70 from holyfei/master

Fix #I1TL2O

reason:
1.add lock for exporter
2.use exportID to specify different tasks
3.add remove
Signed-off-by: Nyangfeiyu <yangfeiyu2@huawei.com>

Merge pull request !69 from holyfei/master

    
reason:
1.reduce var declare
2.reduce the scope of local var
3.make sure the file is not nil when close it
Signed-off-by: Nyangfeiyu <yangfeiyu2@huawei.com>

Merge pull request !68 from DCCooper/hack

Signed-off-by: NDCCooper <1866858@gmail.com>

Merge pull request !67 from jingxiaolu/fix_A

Fix a parse bug on ${A}

Fixes: #I1T68Q
Signed-off-by: Njingxiaolu <lujingxiao@huawei.com>

Merge pull request !65 from holyfei/master

Merge pull request !66 from Vanient/master

Signed-off-by: Nxiadanni <xiadanni1@huawei.com>

Merge pull request !64 from DCCooper/bugfix

Signed-off-by: NDCCooper <1866858@gmail.com>

reason: add go test for image load
Signed-off-by: Nyangfeiyu <yangfeiyu2@huawei.com>

Merge pull request !62 from DCCooper/refactor

Signed-off-by: NDCCooper <1866858@gmail.com>

Merge pull request !61 from Vanient/master

Merge pull request !63 from Vanient/images

isula-build images <image name>
Signed-off-by: Nxiadanni <xiadanni1@huawei.com>

Merge pull request !60 from zvier/bep

Signed-off-by: Nxiadanni <xiadanni1@huawei.com>

Signed-off-by: Nliuzekun <liuzekun@huawei.com>

Merge pull request !59 from DCCooper/hack

1. enhancement of unit test function
2. fix go test error
Signed-off-by: NDCCooper <1866858@gmail.com>

Merge pull request !30 from zvier/bep

In static build mode, using the same Dockerfile which is in building, may
make image id conflict in image store. So, we reject those request
directly.
Signed-off-by: Nliuzekun <liuzekun@huawei.com>

Merge pull request !53 from DCCooper/bugfix

1. fix save tarball not contain tag
2. refactor save relative function
3. fix `make debug` typo in Makefile
Signed-off-by: NDCCooper <1866858@gmail.com>

Merge pull request !58 from Vanient/master

Signed-off-by: Nxiadanni <xiadanni1@huawei.com>