update google-auth to 1.15.0 part 5 (#3818)

Author: leahecole

iam/api-client/requirements.txt

@@ -1,3 +1,3 @@
 google-api-python-client==1.8.2
-google-auth==1.14.3
+google-auth==1.15.0
 google-auth-httplib2==0.0.3

iap/requirements.txt

@@ -1,6 +1,6 @@
 cryptography==2.9.2
 flask==1.1.2
-google-auth==1.14.3
+google-auth==1.15.0
 gunicorn==20.0.4
 requests==2.23.0
 requests_toolbelt==0.9.1

iot/api-client/end_to_end_example/requirements.txt

@@ -1,7 +1,7 @@
 cryptography==2.9.2
 google-api-python-client==1.8.2
 google-auth-httplib2==0.0.3
-google-auth==1.14.3
+google-auth==1.15.0
 google-cloud-pubsub==1.4.3
 pyjwt==1.7.1
-paho-mqtt==1.5.0
+paho-mqtt==1.5.0

iot/api-client/gcs_file_to_device/requirements.txt

@@ -1,5 +1,5 @@
 google-api-python-client==1.8.2
-google-auth==1.14.3
+google-auth==1.15.0
 google-auth-httplib2==0.0.3
 google-cloud-iot==1.0.0
 google-cloud-pubsub==1.4.3

iot/api-client/http_example/requirements.txt

@@ -1,7 +1,7 @@
 cryptography==2.9.2
 google-api-python-client==1.8.2
 google-auth-httplib2==0.0.3
-google-auth==1.14.3
+google-auth==1.15.0
 google-cloud-iot==1.0.0
 google-cloud-pubsub==1.4.3
 pyjwt==1.7.1

iot/api-client/manager/requirements.txt

@@ -2,7 +2,7 @@ cryptography==2.9.2
 flaky==3.6.1
 google-api-python-client==1.8.2
 google-auth-httplib2==0.0.3
-google-auth==1.14.3
+google-auth==1.15.0
 google-cloud-iot==1.0.0
 google-cloud-pubsub==1.4.3
 paho-mqtt==1.5.0

iot/api-client/mqtt_example/requirements.txt

@@ -1,7 +1,7 @@
 cryptography==2.9.2
 google-api-python-client==1.8.2
 google-auth-httplib2==0.0.3
-google-auth==1.14.3
+google-auth==1.15.0
 google-cloud-pubsub==1.4.3
 google-cloud-iot==1.0.0
 grpc-google-iam-v1==0.12.3