awk +特定の構造の行数を計算する方法

awk次の構造に一致するすべての行を計算する方法：

"any-string" : "any-string"

例えば

      "ssl.server.keystore.type" : 
      "mapred-logsearch-conf" : {
      "hive.server2.thrift.sasl.qop" : "auth",
      "hive.merge.orcfile.stripe.level" : "true",
      "hive.orc.splits.include.file.footer" : "false",
      "hive.exec.compress.output" : "false",
      "hive.user.install.directory" : "/user/",
      "hive.prewarm.enabled" : "false",
      "hive.compactor.delta.num.threshold" : "10",
      "hive.orc.compute.splits.num.threads" : "10",
      "hive.vectorized.groupby.checkinterval" : "4096",
      "properties_attributes" : { },

出力「9」を生成します。