tests: Compare blueprints as TOML objects, not strings

this is to avoid differences in ordering and white space. The same
approach is used on rhel7-extras branch.

Cherry-picked from 04bc5e9e86

Related: rhbz#1825190

test/vm.install

@@ -19,6 +19,14 @@ if ! rpm -q beakerlib; then
     yum install -y beakerlib
 fi
 
+if ! rpm -q python36; then
+    yum -y install python36
+fi
+
+if ! rpm -q python3-pytoml; then
+    yum -y install python3-pytoml
+fi
+
 if ! rpm -q git; then
     yum install -y git
 fi

tests/cli/lib/toml-compare

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+import sys
+import pytoml as toml
+
+if len(sys.argv) != 3:
+    print("USAGE: ", __file__, "<blueprint-one.toml> <blueprint-two.toml>")
+    sys.exit(1)
+
+blueprint_one = toml.loads(open(sys.argv[1]).read())
+blueprint_two = toml.loads(open(sys.argv[2]).read())
+
+assert blueprint_one == blueprint_two

tests/cli/test_blueprints_sanity.sh

@@ -52,7 +52,8 @@ __EOF__
     rlPhaseEnd
 
     rlPhaseStartTest "blueprints show"
-        rlAssertEquals "show displays blueprint in TOML" "`$CLI blueprints show $BLUEPRINT_NAME`" "`cat $BLUEPRINT_NAME.toml`"
+        $CLI blueprints show $BLUEPRINT_NAME > shown-$BLUEPRINT_NAME.toml
+        rlRun -t -c "$(dirname $0)/lib/toml-compare $BLUEPRINT_NAME.toml shown-$BLUEPRINT_NAME.toml"
     rlPhaseEnd
 
     rlPhaseStartTest "SemVer .patch version is incremented automatically"