osci, zuul, gitreview and Pin charmcraft to 0.10.2

Add osci config, zuul config, git review and pin charmcraft.
Charmcraft pin is to maintain support for building out of a
venv.

Change-Id: I0d11ce7dc7e7640c963d3807fcd91b64541c167d

.gitreview

@@ -0,0 +1,4 @@
+[gerrit]
+host=review.opendev.org
+port=29418
+project=openstack/charm-ceph-dashboard

.zuul.yaml

@@ -0,0 +1,4 @@
+- project:
+    templates:
+      - openstack-python3-charm-jobs
+      - openstack-cover-jobs

build-requirements.txt

@@ -0,0 +1 @@
+git+https://github.com/canonical/charmcraft.git@0.10.2#egg=charmcraft

osci.yaml

@@ -0,0 +1,10 @@
+- project:
+    templates:
+      - charm-unit-jobs
+    check:
+      jobs:
+      - focal
+    vars:
+      needs_charm_build: true
+      charm_build_name: ceph-dashboard
+      build_type: charmcraft

tests/tests.yaml

@@ -11,3 +11,6 @@ target_deploy_status:
   vault:
     workload-status: blocked
     workload-status-message: Vault needs to be initialized
+  ceph-dashboard:
+    workload-status: blocked
+    workload-status-message-prefix: Dashboard not responding

tox.ini

@@ -100,7 +100,7 @@ commands = {posargs}
 
 [testenv:build]
 basepython = python3
-deps =
+deps = -r{toxinidir}/build-requirements.txt
 commands =
     charmcraft build