[PDF] Fix yamllint issues in installer adapters

Although current YAML files in Pharos are all valid according to
yamllint, the resulting YAMLs after PDF/IDF + IA interpolations
still have a lot of violations, which need to be addressed.

PDF changes:
- bii/pod1:
  + fix typo in disks_A reference;

IDF changes:
- replace empty strings with `~` keyword (will be expanded to 'None');

IA (installer adapter) changes:
- apex:
  + add missing document start;
- compass4nfv:
  + too few spaces before comment;
  + missing starting space in comment;
  + replace '\t' with spaces;
- daisy:
  + None;
- fuel:
  + check conf.idf is defined first (fix parse for PODs without IDF);
  + move document start outside conf.idf condition
- joid:
  + None;

This is not an exhaustive change, some yamllint issues are still there
but require either refactoring IAs or changing the PDF/IDF files in a
way that needs the respective maintainer's input.

Change-Id: I26743e265217e892b6a94de96a016c295ea24fb5
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/labs/bii/pod1.yaml b/labs/bii/pod1.yaml
index 29d9a4e2..159401b7 100644
--- a/labs/bii/pod1.yaml
+++ b/labs/bii/pod1.yaml
@@ -103,8 +103,8 @@ nodes:
       cpu_cflags: haswell    # add values based on CFLAGS in GCC
       cores: 8               # physical cores, not including hyper-threads
       memory: 32G
-    disks: &disk_A                           # disk list
-      - name: 'disk1'                           # first disk
+    disks: &disks_A                           # disk list
+      - name: 'disk1'                         # first disk
         disk_capacity: 128G                   # volume
         disk_type: ssd                        # several disk types possible
         disk_interface: sas                   # several interface types possible