Make SDK manager checker happy

When we upgraded to platform-tools 31.0.3, we missed updating
package.xml, so SDK manager was thinking we were on an old version.

Dowloading 31.0.3 through SDK manager only updates package.xml

Test: studio SDK manager no longer warns
Change-Id: I2b37a0b9aa1d3a0f78118471f4d01642b0388549
diff --git a/package.xml b/package.xml
index 1afc3da..a301c2e 100644
--- a/package.xml
+++ b/package.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:repository xmlns:ns2="http://schemas.android.com/repository/android/common/02" xmlns:ns3="http://schemas.android.com/repository/android/common/01" xmlns:ns4="http://schemas.android.com/repository/android/generic/01" xmlns:ns5="http://schemas.android.com/repository/android/generic/02" xmlns:ns6="http://schemas.android.com/sdk/android/repo/addon2/01" xmlns:ns7="http://schemas.android.com/sdk/android/repo/addon2/02" xmlns:ns8="http://schemas.android.com/sdk/android/repo/repository2/01" xmlns:ns9="http://schemas.android.com/sdk/android/repo/repository2/02" xmlns:ns10="http://schemas.android.com/sdk/android/repo/sys-img2/02" xmlns:ns11="http://schemas.android.com/sdk/android/repo/sys-img2/01"><license id="android-sdk-license" type="text">Terms and Conditions
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns2:repository xmlns:ns2="http://schemas.android.com/repository/android/common/02" xmlns:ns3="http://schemas.android.com/repository/android/common/01" xmlns:ns4="http://schemas.android.com/repository/android/generic/01" xmlns:ns5="http://schemas.android.com/repository/android/generic/02" xmlns:ns6="http://schemas.android.com/sdk/android/repo/addon2/01" xmlns:ns7="http://schemas.android.com/sdk/android/repo/addon2/02" xmlns:ns8="http://schemas.android.com/sdk/android/repo/addon2/03" xmlns:ns9="http://schemas.android.com/sdk/android/repo/repository2/01" xmlns:ns10="http://schemas.android.com/sdk/android/repo/repository2/02" xmlns:ns11="http://schemas.android.com/sdk/android/repo/repository2/03" xmlns:ns12="http://schemas.android.com/sdk/android/repo/sys-img2/03" xmlns:ns13="http://schemas.android.com/sdk/android/repo/sys-img2/02" xmlns:ns14="http://schemas.android.com/sdk/android/repo/sys-img2/01"><license id="android-sdk-license" type="text">Terms and Conditions
 
 This is the Android Software Development Kit License Agreement
 
@@ -138,4 +138,4 @@
 14.7 The License Agreement, and your relationship with Google under the License Agreement, shall be governed by the laws of the State of California without regard to its conflict of laws provisions. You and Google agree to submit to the exclusive jurisdiction of the courts located within the county of Santa Clara, California to resolve any legal matter arising from the License Agreement. Notwithstanding this, you agree that Google shall still be allowed to apply for injunctive remedies (or an equivalent type of urgent legal relief) in any jurisdiction.
 
 
-January 16, 2019</license><localPackage path="platform-tools" obsolete="false"><type-details xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns5:genericDetailsType"/><revision><major>31</major><minor>0</minor><micro>2</micro></revision><display-name>Android SDK Platform-Tools</display-name><uses-license ref="android-sdk-license"/></localPackage></ns2:repository>
\ No newline at end of file
+January 16, 2019</license><localPackage path="platform-tools" obsolete="false"><type-details xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns5:genericDetailsType"/><revision><major>31</major><minor>0</minor><micro>3</micro></revision><display-name>Android SDK Platform-Tools</display-name><uses-license ref="android-sdk-license"/></localPackage></ns2:repository>
\ No newline at end of file