New release beta version.

* Changes
- tests: increase run.go code coverage
- tests: increase code coverage in console.go
- tests: Only re-run unit-tests if not initially running as root
- scripts: Move release_notes.sh to scripts
- Update dev install guide
- Unit tests for exec.go
- .ci: Fix runtime CI scripts to work with Jenkins
- tests: Increase unit-test coverage on create.go
- tests: Run unit tests as root and non-root.
- tests: Increase oci.go unit-test coverage
- vendor: Update virtcontainers vendoring for updated StatusToOCIState
- Make run tests use cached bundle
- tests: add unit tests for state.go
- pause: Implement full unit test coverage
- kill: Implement full unit test coverage
- tests: add unit tests for run.go
- tests: Add tests for delete using mock framework
- tests: Increase unit-test coverage for list.go
- tests: Stop bundle creation timing out tests
- tests: Add unit tests for start.go
- Increase create test coverage
- tests: Rework OCI helper functions
- config: Add comment about ncpus >0 <=255
- state: Apply indentation to the state output.
- tests: Add helper functions
- test: add unit test for console Read and Write
- test: add unit test for isCgroupMounted function
- tests: switchable virtcontainers implementation
- vendor: Update virtcontainers vendoring for vcMock
- cc-check: warn if unrestricted_guest unavailable under hypervisor
- build: rebuild if git HEAD changed
- vendor: Update virtcontainers vendoring
- Docs: Add how to get agent debug logs.
- pause: Rewrite pause binary in go.
- docs: Remove references to alpha version
- docs: Update instruction to download compressed kernel
- docs : Automate release notes

Fixes: clearcontainers#503

Signed-off-by: Jose Carlos Venegas Munoz <[email protected]>

The kernel was updated in packaing and linux repositories
but not in runitme.

Signed-off-by: Jose Carlos Venegas Munoz <[email protected]>