Generate CRD and RBAC yaml templates from submariner-operator

The submariner-operator repo is the source of truth for the
CRD and RBAC resource yaml used by subctl and the ACM add-on so
we should use it for the helm charts as well. This will avoid
having to duplicate changes from the submariner-operator repo.
All the yaml is assembled in the pkg/embeddedyamls/yamls.go file
in submariner-operator so download and extract the yaml into
template files in the chart templates directories which can then
be included in other manifest files.

Signed-off-by: Tom Pantelis <tompantelis@gmail.com>

extract-yamls

@@ -4,7 +4,10 @@
 /= `/ {
     outfile = gensub("_yaml$", ".yaml", "1", $1)
     print "Writing " outfile
-    print substr($0, index($0, "`") + 1) > outfile
+    firstline = substr($0, index($0, "`") + 1)
+    if (firstline !~ "^---")
+        firstline = "---\n"firstline
+    print firstline > outfile
     next
 }