Unofficially tolerate pasu and own input

If someone tries to use this with pasu syntax, try to do the right
thing.  Similarly, if trying to paste the same syntax nodeconfig
uses on output, tolerate that as well.

confluent_client/bin/nodeconfig

@@ -84,6 +84,8 @@ assignment = {}
 queryparms = {}
 printsys = []
 setsys = {}
+forceset = False
+needval = None
 
 if len(args) == 1 or options.exclude:
     if not options.exclude:
@@ -94,18 +96,40 @@ if len(args) == 1 or options.exclude:
         if path not in queryparms:
             queryparms[path] = {}
         queryparms[path][attrib] = candidate
+
+
+def _assign_value():
+    if key not in cfgpaths:
+        setsys[key] = value
+    for depkey, depval in autodeps.get(key, []):
+        assignment[depkey] = depval
+    assignment[key] = value
+
+
 for param in args[1:]:
-    if '=' in param:
+    if param == 'show':
+        continue  # forgive muscle memory of pasu users
+    if param == 'set':
+        setmode = True
+        forceset = True
+        continue
+    if needval:
+        key = needval
+        value = param
+        _assign_value()
+        continue
+    if '=' in param or param[-1] == ':' or forceset:
         if setmode is None:
             setmode = True
         if setmode != True:
             bailout('Cannot do set and query in same command')
-        key, _, value = param.partition('=')
-        if key not in cfgpaths:
-            setsys[key] = value
-        for depkey, depval in autodeps.get(key, []):
-            assignment[depkey] = depval
-        assignment[key] = value
+        if '=' in param:
+            key, _, value = param.partition('=')
+            _assign_value()
+        elif param[-1] == ':':
+            needval = param[:-1]
+        else:
+            needval = param
     else:
         if setmode is None:
             setmode = False