Danube Release Docs Fixup patch 1

Done in this patch
1. Fixes in overview.rst
2. Moves governance folder under docs
3. Adds arno release use case doc from
https://wiki.opnfv.org/display/parser/Parser+Use+Cases to the
requirement folder
4. Moves two old tosca2heat documents into developer/design/examples
5. Adds new empty tosca2heat and verigraph design document under
developer/design.
6. Remove old contents in yang2tosca and policy2tosca design docs since
they are all related to installation/execution, not design.
7. Fixes in installation.instruction.rst and usage,guide.rst

To do in the following patches
1. Design doc writeup: Xiaodong(tosca2heat),
Shiva(yang2tosca/policy2tosca), Serena(verigraph)
2. Release doc writeup: Xiaodong and Howard
(postinstall.rst,scenario.description.rst), Serena(verigraph part of
release-notes.rst), release-notes.rst

Change-Id: If4f51067dd33acd2332e503ee31d6941b4df4c89
Signed-off-by: zhipengh <huangzhipeng@huawei.com>

1 files changed, 0 insertions, 117 deletions

diff --git a/docs/developer/design/parser_new_keywords.rst b/docs/developer/design/parser_new_keywords.rst
deleted file mode 100644
index f430b1d..0000000
--- a/docs/developer/design/parser_new_keywords.rst
+++ /dev/null
@@ -1,117 +0,0 @@
-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
-.. http://creativecommons.org/licenses/by/4.0
-
-===================
-New Parser keywords
-===================
-
-1.NFV-tosca new keywords
-------------------------
-
-All keywords in nfv tosca are not implemented in code, and will be
-implemented by parser.
-
-1.1 Nodes types
-~~~~~~~~~~~~~~~
-
-Basic types
-^^^^^^^^^^^
-
-* tosca.nodes.nfv.VDU
-* tosca.nodes.nfv.CP
-* tosca.nodes.nfv.VL
-
-Extend types
-^^^^^^^^^^^^
-
-* tosca.nodes.nfv.VL.ELine
-* tosca.nodes.nfv.VL.ELAN
-* tosca.nodes.nfv.VL.ETree
-* tosca.nodes.nfv.FP
-
-1.2 Capability types
-~~~~~~~~~~~~~~~~~~~~
-
-Basic types
-^^^^^^^^^^^
-
-* tosca.capabilities.nfv.VirtualBindable
-* tosca.capabilities.nfv.VirtualLinkable
-* tosca.capabilities.nfv.HA.ActiveActive
-* tosca.capabilities.nfv.HA.ActivePassive
-* tosca.capabilities.nfv.Metric
-
-Extend types
-^^^^^^^^^^^^
-
-* tosca.capabilities.nfv.Forwarder
-* tosca.capabilities.nfv.CPU\_extension
-* tosca.capabilities.nfv.Memory\_extension
-* tosca.capabilities.nfv.Hypervisors
-* tosca.capabilities.nfv.PCIe
-* tosca.capabilities.nfv.network.Interfaces
-* tosca.capabilities.nfv.network.Virtual\_switches
-* tosca.capabilities.nfv.Storage
-
-1.3 Relationship types
-~~~~~~~~~~~~~~~~~~~~~~
-
-Basic types
-^^^^^^^^^^^
-
-* tosca.relationships.nfv.VirtualBindsTo
-* tosca.relationships.nfv.VirtualLinksTo
-* tosca.relationships.nfv.HA
-* tosca.relationships.nfv.Monitor
-
-Extend types
-^^^^^^^^^^^^
-
-* tosca.relationships.nfv.ForwardsTo
-
-1.4 Group Types
-~~~~~~~~~~~~~~~
-
-* tosca.groups.nfv.VNFFG
-
-2.Simple-tosca new keywords
----------------------------
-
-Some keywords are only defined in tosca simple profile,but are not
-supported in tosca-paser, and some keywords such as "policy type", are not yet defined
-completely so far.
-
-2.1 topology template keyname
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-* "substitution\_mappings" syntax
-
-    An optional declaration that exports the topology template as an
-    impletmentation of a node type, which is not supported by tosca-parser.
-
-2.2 Group types
-~~~~~~~~~~~~~~~
-
-Basic types
-^^^^^^^^^^^
-
-* tosca.group.root
-
-2.3 Policy Types
-~~~~~~~~~~~~~~~~
-
-Basic types
-^^^^^^^^^^^
-
-* tosca.policies.Root
-* tosca.policies.Placement
-* tosca.policies.Scaling
-
-Extend types
-^^^^^^^^^^^^
-
-* tosca.policies.Update
-* tosca.policies.Performance
-* tosca.policy.placement.Antilocate
-* tosca.policy.placement.Colocate
-