various fixes (#70)

- dont show ccr status if license insufficient
- add automated tests
- fix config loading
- fix search output
- fix `license show` panics
- fix `ilm show` completion
- print ask passwd prompt to stderr

t/msc-cluster.yaml

@@ -0,0 +1,48 @@
+#
+# this is a mosscap item file, see: https://codeberg.org/scip/mosscap
+statefile: cluster.state
+
+items:
+  - name: docker/domdoc
+
+vars:
+  index: test
+  node: es01
+  policy: testpolicy
+  
+tasks:
+  - name: ls
+    action: cluster_ls
+
+  - name: license
+    action: license
+    
+  - name: status
+    action: cluster_status
+
+  - name: ilm
+    action: create_ilm
+
+  - name: check_ilm
+    action: describe_ilm
+    
+  - name: template
+    action: create_index_template
+
+  - name: check_template
+    action: describe_index_template
+    
+  - name: index
+    action: create_index
+
+  - name: indexls
+    action: index_ls
+
+  - name: describe
+    action: describe_index
+
+  - name: nodes
+    action: nodes
+
+  - name: check_node
+    action: describe_node