Addressed the performance issue of show interface transceiver summary cmmand (#135)

Author: Vasanthm, Ravi

CLI/actioner/sonic-cli-pfm.py

@@ -283,7 +283,7 @@ def run(func, args):
                     n = nm.replace("/", "%2F")
                 path = cc.Path(
                     "/restconf/data/openconfig-platform:components/component="
-                    + n)
+                    + n + "/openconfig-platform-transceiver:transceiver")
                 response = aa.get(path)
                 if not response.ok():
                     print((response.error_message()))
@@ -293,7 +293,7 @@ def run(func, args):
                     continue
                 try:
                     xcvrInfo[nm] = response.content[
-                        "openconfig-platform:component"][0]
+                        "openconfig-platform-transceiver:transceiver"]
                 except:
                     xcvrInfo[nm] = {}
 
@@ -303,8 +303,7 @@ def run(func, args):
                               key=lambda x: ifutils.name_to_int_val(x)):
                 d2 = OrderedDict()
                 try:
-                    d = xcvrInfo[val][
-                        "openconfig-platform-transceiver:transceiver"]["state"]
+                    d = xcvrInfo[val]["state"]
                     for k in d:
                         a = k
                         b = d[k]