Support no_check_certificate=True subcloud install option

The install value no_check_certificate tranlates into
boot argument inst.noverifyssl=True from subcloud_install.py
This commit ensures that when we see this boot argument
we apply the tls-permissive config value to the repo remote.

Test Plan:
PASS:
- Install on system controller with https_enabled=True
    - Without no_check_certificate=True:
        - Install fails with 'Unacceptable TLS certificate'
          error during ostree pull
    - With no_check_certificate=True:
        - Install is successful
        - ostree pull is using https url
- Install on system controller with https_enabled=False
    - ostree pull is using http url (no SSL)
    - Install is successful

Story: 2010118
Task: 46180

Change-Id: I162904e52cc63c1a9e4e9f68c6c9921c8c4d8f3a
Signed-off-by: Kyle MacLeod <kyle.macleod@windriver.com>

kickstart/files/miniboot.cfg

@@ -1523,6 +1523,13 @@ if [ "${controller}" = true ] ; then
         ilog "Using ostree remote: ${instbr} ${insturl}"
         ostree --repo=${repo} remote add ${instbr} ${insturl}
     fi
+    # Check for noverifyssl in boot arguments.
+    # Note: even if noverifyssl is not set, we still don't have proper support
+    # for SSL certificates (which would require configuring cert paths here).
+    if grep -q noverifyssl /proc/cmdline 2>/dev/null; then
+        ilog "Configuring ostree for unverified SSL"
+        ostree config --repo=${repo} set "remote \"${instbr}\"".tls-permissive true
+    fi
 
     ilog "ostree --repo=${repo} pull --depth=-1 --mirror ${instbr}:${instbr}"
     ostree --repo=${repo} pull --depth=-1 --mirror ${instbr}:${instbr}